diff --git a/app/citizen-frontend/src/pages/register.vue b/app/citizen-frontend/src/pages/register.vue
index 1c64e28..1c3a83c 100644
--- a/app/citizen-frontend/src/pages/register.vue
+++ b/app/citizen-frontend/src/pages/register.vue
@@ -209,10 +209,10 @@ const existingDraft = readGuestSelfAssessmentDraft();
 const routePhone = normalizePhone(String(route.query.phone ?? ""));
 
 const form = reactive({
-  phone: routePhone || existingDraft?.profile.phone || "",
+  phone: routePhone,
   password: "",
   passwordConfirmation: "",
-  consent: existingDraft?.profile.consent ?? false,
+  consent: false,
 });
 
 const loading = ref(false);
diff --git a/app/citizen-frontend/src/pages/self-assessment.vue b/app/citizen-frontend/src/pages/self-assessment.vue
index 8bc118e..a9b6912 100644
--- a/app/citizen-frontend/src/pages/self-assessment.vue
+++ b/app/citizen-frontend/src/pages/self-assessment.vue
@@ -9,7 +9,7 @@
           v-for="(stepName, idx) in stepNames"
           :key="idx"
           class="text-center"
-          cols="3"
+          cols="4"
         >
           <v-avatar
             class="text-white font-weight-bold mb-1 elevation-1"
@@ -54,149 +54,8 @@
             {{ errorMessage }}
           </v-alert>
 
-          <!-- 步驟 1：基本資料 -->
+          <!-- 步驟 1：活動量與自評 -->
           <div v-if="currentStep === 0">
-            <h2
-              class="text-title-medium font-weight-bold text-primary mb-4 d-flex align-center"
-            >
-              <v-icon
-                class="mr-2"
-                color="secondary"
-                icon="mdi-account-circle"
-              />
-              基本資料確認
-            </h2>
-
-            <v-row>
-              <v-col cols="12" sm="6">
-                <v-text-field
-                  v-model="profileForm.name"
-                  class="mb-3"
-                  color="primary"
-                  density="comfortable"
-                  hide-details="auto"
-                  label="姓名"
-                  variant="outlined"
-                />
-              </v-col>
-
-              <v-col cols="12" sm="6">
-                <v-text-field
-                  v-model="profileForm.phone"
-                  class="mb-3"
-                  color="primary"
-                  density="comfortable"
-                  hide-details="auto"
-                  label="手機號碼"
-                  type="tel"
-                  variant="outlined"
-                />
-              </v-col>
-
-              <v-col cols="12" sm="6">
-                <v-select
-                  v-model="profileForm.gender"
-                  class="mb-3"
-                  color="primary"
-                  density="comfortable"
-                  hide-details="auto"
-                  :items="genderOptions"
-                  label="性別"
-                  variant="outlined"
-                />
-              </v-col>
-
-              <v-col cols="12" sm="6">
-                <v-date-input
-                  v-model="birthdayDate"
-                  class="mb-3"
-                  color="primary"
-                  density="comfortable"
-                  hide-details="auto"
-                  label="生日"
-                  prepend-icon=""
-                  prepend-inner-icon="mdi-calendar"
-                  variant="outlined"
-                />
-              </v-col>
-
-              <v-col cols="6">
-                <v-text-field
-                  v-model.number="profileForm.height"
-                  class="mb-3"
-                  color="primary"
-                  density="comfortable"
-                  hide-details="auto"
-                  label="身高 (公分)"
-                  type="number"
-                  variant="outlined"
-                />
-              </v-col>
-
-              <v-col cols="6">
-                <v-text-field
-                  v-model.number="profileForm.weight"
-                  class="mb-3"
-                  color="primary"
-                  density="comfortable"
-                  hide-details="auto"
-                  label="體重 (公斤)"
-                  type="number"
-                  variant="outlined"
-                />
-              </v-col>
-
-              <v-col cols="12" sm="6">
-                <v-text-field
-                  v-model="profileForm.email"
-                  class="mb-3"
-                  color="primary"
-                  density="comfortable"
-                  hide-details="auto"
-                  label="Email（選填）"
-                  type="email"
-                  variant="outlined"
-                />
-              </v-col>
-
-              <v-col cols="12" sm="6">
-                <v-text-field
-                  v-model="profileForm.emergencyContact"
-                  class="mb-3"
-                  color="primary"
-                  density="comfortable"
-                  hide-details="auto"
-                  label="緊急聯絡人（選填）"
-                  variant="outlined"
-                />
-              </v-col>
-
-              <v-col cols="12" sm="6">
-                <v-text-field
-                  v-model="profileForm.emergencyPhone"
-                  class="mb-3"
-                  color="primary"
-                  density="comfortable"
-                  hide-details="auto"
-                  label="緊急聯絡電話（選填）"
-                  type="tel"
-                  variant="outlined"
-                />
-              </v-col>
-            </v-row>
-
-            <v-checkbox
-              v-model="profileForm.consent"
-              class="mt-2 text-caption"
-              color="primary"
-              density="compact"
-              hide-details
-              label="我已閱讀並同意個資授權條款"
-            />
-          </div>
-
-          <!-- 步驟 2：活動量與自評 -->
-          <div v-if="currentStep === 1">
             <h2
               class="text-title-medium font-weight-bold text-primary mb-4 d-flex align-center"
             >
@@ -305,8 +164,8 @@
             </v-row>
           </div>
 
-          <!-- 步驟 3：身體狀況自評 -->
-          <div v-if="currentStep === 2">
+          <!-- 步驟 2：身體狀況自評 -->
+          <div v-if="currentStep === 1">
             <h2
               class="text-title-medium font-weight-bold text-primary mb-4 d-flex align-center"
             >
@@ -373,8 +232,8 @@
             </v-row>
           </div>
 
-          <!-- 步驟 4：自評結果 -->
-          <div v-if="currentStep === 3" class="text-center py-4">
+          <!-- 步驟 3：自評結果 -->
+          <div v-if="currentStep === 2" class="text-center py-4">
             <v-avatar
               class="elevation-2 mb-4"
               :color="getResultColor(resultLevel)"
@@ -444,7 +303,7 @@
 
         <v-card-actions class="px-5 py-4 d-flex justify-between">
           <v-btn
-            v-if="currentStep > 0 && currentStep < 3"
+            v-if="currentStep > 0 && currentStep < 2"
             class="rounded-lg px-4"
             color="primary"
             variant="outlined"
@@ -456,10 +315,9 @@
           <v-spacer />
 
           <v-btn
-            v-if="currentStep < 2"
+            v-if="currentStep < 1"
             class="rounded-lg px-6"
             color="primary"
-            :disabled="currentStep === 0 && !profileForm.consent"
             variant="flat"
             @click="goToNextStep"
           >
@@ -467,7 +325,7 @@
           </v-btn>
 
           <v-btn
-            v-else-if="currentStep === 2"
+            v-else-if="currentStep === 1"
             class="rounded-lg px-6 text-white"
             color="secondary"
             variant="flat"
@@ -493,7 +351,7 @@
 
       <!-- 返回按鈕 (結果頁專用) -->
       <v-btn
-        v-if="currentStep === 3"
+        v-if="currentStep === 2"
         block
         class="rounded-lg py-2"
         color="primary"
@@ -507,18 +365,16 @@
 </template>
 
 <script setup lang="ts">
-import { computed, onMounted, reactive, ref, watch } from "vue";
+import { onMounted, reactive, ref, watch } from "vue";
 import { useRouter } from "vue-router";
 import type {
   ChronicDisease,
   ExerciseFrequency,
-  Gender,
   PainLevel,
   RiskLevel,
   SelfAssessmentRequest,
   WantedImprovement,
 } from "@/api/types";
-import { CONSENT_VERSION } from "@/api/types";
 import Layout from "@/components/layout/DefaultLayout.vue";
 import PageHeading from "@/components/layout/PageHeading.vue";
 import { APPOINTMENT_ENABLED } from "@/config/features";
@@ -535,36 +391,7 @@ const router = useRouter();
 const currentStep = ref(0);
 const appointmentLoading = ref(false);
 const errorMessage = ref("");
-const stepNames = ["基本資料", "功能狀態", "健康限制", "自評結果"];
-
-const profileForm = reactive<{
-  name: string;
-  phone: string;
-  birthday: string;
-  gender: Gender | "";
-  height: number;
-  weight: number;
-  email: string;
-  emergencyContact: string;
-  emergencyPhone: string;
-  consent: boolean;
-}>({
-  name: store.userProfile.name,
-  phone: store.userProfile.phone,
-  birthday: store.userProfile.birthday,
-  gender:
-    store.userProfile.gender === "男"
-      ? "male"
-      : store.userProfile.gender === "女"
-        ? "female"
-        : "",
-  height: store.userProfile.height,
-  weight: store.userProfile.weight,
-  email: store.userProfile.email,
-  emergencyContact: store.userProfile.emergencyContact,
-  emergencyPhone: store.userProfile.emergencyPhone,
-  consent: store.userProfile.consent,
-});
+const stepNames = ["功能狀態", "健康限制", "自評結果"];
 
 const assessmentForm = reactive<{
   exerciseFrequency: ExerciseFrequency | "";
@@ -582,10 +409,6 @@ const assessmentForm = reactive<{
 
 const resultLevel = ref<RiskLevel | "">(store.selfAssessment.scoreLevel);
 
-const genderOptions = [
-  { title: "男", value: "male" as const },
-  { title: "女", value: "female" as const },
-];
 const painOptions = [
   { title: "無", value: "none" as const },
   { title: "輕微", value: "mild" as const },
@@ -617,59 +440,21 @@ const diseaseOptions = [
   { title: "骨質疏鬆", value: "osteoporosis" as const },
 ];
 
-const birthdayDate = computed<Date | null>({
-  get: () => parseDateString(profileForm.birthday),
-  set: (value) => {
-    profileForm.birthday = formatDateString(value);
-  },
-});
-
 onMounted(() => {
   const draft = readGuestSelfAssessmentDraft();
   if (!draft) {
     return;
   }
 
-  profileForm.name = draft.profile.name;
-  profileForm.phone = draft.profile.phone;
-  profileForm.birthday = draft.profile.birthday;
-  profileForm.gender = draft.profile.gender;
-  profileForm.height = draft.profile.heightCm;
-  profileForm.weight = draft.profile.weightKg;
-  profileForm.email = draft.profile.email ?? "";
-  profileForm.emergencyContact = draft.profile.emergencyContact ?? "";
-  profileForm.emergencyPhone = draft.profile.emergencyPhone ?? "";
-  profileForm.consent = draft.profile.consent;
   assessmentForm.exerciseFrequency = draft.assessment.exerciseFrequency;
   assessmentForm.wantedImprovements = [...draft.assessment.wantedImprovements];
   assessmentForm.hasFalls = draft.assessment.hasFalls;
   assessmentForm.painLevel = draft.assessment.painLevel;
   assessmentForm.chronicDiseases = [...draft.assessment.chronicDiseases];
   resultLevel.value = draft.provisionalRiskLevel;
-  currentStep.value = 3;
+  currentStep.value = 2;
 });
 
-function parseDateString(value: string) {
-  const [year, month, day] = value.split("-").map(Number);
-  if (!year || !month || !day) {
-    return null;
-  }
-
-  return new Date(year, month - 1, day);
-}
-
-function formatDateString(value: Date | null) {
-  if (!value) {
-    return "";
-  }
-
-  const year = value.getFullYear();
-  const month = String(value.getMonth() + 1).padStart(2, "0");
-  const day = String(value.getDate()).padStart(2, "0");
-
-  return `${year}-${month}-${day}`;
-}
-
 function toggleImprovement(improvement: WantedImprovement) {
   const index = assessmentForm.wantedImprovements.indexOf(improvement);
   if (index === -1) {
@@ -699,26 +484,9 @@ function goToNextStep() {
   scrollToPageTop();
 }
 
-watch(profileForm, clearErrorMessage);
 watch(assessmentForm, clearErrorMessage);
 
 function buildAssessmentRequest(): SelfAssessmentRequest | null {
-  if (
-    !profileForm.name.trim() ||
-    !/^09\d{8}$/.test(profileForm.phone.replace(/\D/g, "")) ||
-    !profileForm.birthday ||
-    !profileForm.gender ||
-    profileForm.height < 50 ||
-    profileForm.height > 250 ||
-    profileForm.weight < 20 ||
-    profileForm.weight > 300 ||
-    !profileForm.consent
-  ) {
-    errorMessage.value = "請完整填寫基本資料，並同意個資授權條款。";
-    currentStep.value = 0;
-    return null;
-  }
-
   if (!assessmentForm.exerciseFrequency || !assessmentForm.painLevel) {
     errorMessage.value = "請完成所有自評題目後再送出。";
     return null;
@@ -736,26 +504,12 @@ function buildAssessmentRequest(): SelfAssessmentRequest | null {
 function handleSubmit() {
   errorMessage.value = "";
   const assessment = buildAssessmentRequest();
-  if (!assessment || !profileForm.gender) {
+  if (!assessment) {
     return;
   }
 
-  const normalizedPhone = profileForm.phone.replace(/\D/g, "");
   const provisionalRiskLevel = calculateProvisionalRiskLevel(assessment);
   const draft: GuestSelfAssessmentDraft = {
-    profile: {
-      name: profileForm.name.trim(),
-      phone: normalizedPhone,
-      birthday: profileForm.birthday,
-      gender: profileForm.gender,
-      heightCm: profileForm.height,
-      weightKg: profileForm.weight,
-      email: profileForm.email.trim() || null,
-      emergencyContact: profileForm.emergencyContact.trim() || null,
-      emergencyPhone: profileForm.emergencyPhone.replace(/\D/g, "") || null,
-      consent: profileForm.consent,
-      consentVersion: CONSENT_VERSION,
-    },
     assessment,
     provisionalRiskLevel,
   };
@@ -763,7 +517,7 @@ function handleSubmit() {
   saveGuestSelfAssessmentDraft(draft);
   store.setProvisionalSelfAssessment(assessment);
   resultLevel.value = provisionalRiskLevel;
-  currentStep.value = 3;
+  currentStep.value = 2;
   scrollToPageTop();
 }
 
diff --git a/app/citizen-frontend/src/stores/app.ts b/app/citizen-frontend/src/stores/app.ts
index d463f10..2111b8d 100644
--- a/app/citizen-frontend/src/stores/app.ts
+++ b/app/citizen-frontend/src/stores/app.ts
@@ -33,7 +33,6 @@ import {
   clearGuestSelfAssessmentDraft,
   readGuestSelfAssessmentDraft,
   saveGuestSelfAssessmentDraft,
-  type GuestSelfAssessmentDraft,
 } from "@/utils/guest-self-assessment";
 import { getApiErrorMessage, getApiErrorStatus } from "@/utils/api-error";
 import { calculateProvisionalRiskLevel } from "@/utils/self-assessment";
@@ -154,23 +153,6 @@ function applySelfAssessmentToStore(
   };
 }
 
-function toProfileRequest(
-  profile: GuestSelfAssessmentDraft["profile"],
-): ProfileRequest {
-  return {
-    name: profile.name,
-    birthday: profile.birthday,
-    gender: profile.gender,
-    heightCm: profile.heightCm,
-    weightKg: profile.weightKg,
-    email: profile.email,
-    emergencyContact: profile.emergencyContact,
-    emergencyPhone: profile.emergencyPhone,
-    consent: profile.consent,
-    consentVersion: profile.consentVersion,
-  };
-}
-
 function toProfileRequestFromStore(profile: UserProfile): ProfileRequest {
   if (profile.gender !== "男" && profile.gender !== "女") {
     throw new Error("請先完成性別資料");
@@ -543,10 +525,7 @@ export const useAppStore = defineStore("app", () => {
     }
   }
 
-  /**
-   * 將登入／註冊後的訪客草稿依序正式保存。
-   * Profile 失敗時不會呼叫自評；任一步驟失敗都保留草稿與冪等鍵。
-   */
+  /** 將登入／註冊後的匿名訪客自評正式保存；失敗時保留草稿與冪等鍵。 */
   async function persistGuestSelfAssessment() {
     const draft = readGuestSelfAssessmentDraft();
     if (!draft) {
@@ -563,33 +542,25 @@ export const useAppStore = defineStore("app", () => {
     }
 
     if (USE_MOCK) {
-      const profile: Profile = {
-        ...toProfileRequest(draft.profile),
-        phone: draft.profile.phone,
-        updatedAt: new Date().toISOString(),
-      };
       const assessment: SelfAssessmentResponse = {
         ...draft.assessment,
         assessmentId: `mock-${idempotencyKey}`,
         riskLevel: draft.provisionalRiskLevel,
         completedAt: new Date().toISOString(),
       };
-      userProfile.value = applyProfileToStore(profile);
       setSelfAssessment(assessment);
       clearGuestSelfAssessmentDraft();
-      return { profile, assessment };
+      return assessment;
     }
 
-    const profile = await apiUpdateProfile(toProfileRequest(draft.profile));
     const assessment = await createSelfAssessment(
       draft.assessment,
       idempotencyKey,
     );
 
-    userProfile.value = applyProfileToStore(profile);
     setSelfAssessment(assessment);
     clearGuestSelfAssessmentDraft();
-    return { profile, assessment };
+    return assessment;
   }
 
   function registerAppointment(appointmentId: string) {
diff --git a/app/citizen-frontend/src/utils/guest-self-assessment.ts b/app/citizen-frontend/src/utils/guest-self-assessment.ts
index dc2aafe..f0c4197 100644
--- a/app/citizen-frontend/src/utils/guest-self-assessment.ts
+++ b/app/citizen-frontend/src/utils/guest-self-assessment.ts
@@ -5,7 +5,4 @@ export {
   readGuestSelfAssessmentDraft,
   saveGuestSelfAssessmentDraft,
 } from "./self-assessment";
-export type {
-  GuestSelfAssessmentDraft,
-  GuestSelfAssessmentProfile,
-} from "./self-assessment";
+export type { GuestSelfAssessmentDraft } from "./self-assessment";
diff --git a/app/citizen-frontend/src/utils/self-assessment.ts b/app/citizen-frontend/src/utils/self-assessment.ts
index bc05e8a..abb625e 100644
--- a/app/citizen-frontend/src/utils/self-assessment.ts
+++ b/app/citizen-frontend/src/utils/self-assessment.ts
@@ -1,29 +1,13 @@
 import type {
   ChronicDisease,
   ExerciseFrequency,
-  Gender,
   PainLevel,
   RiskLevel,
   SelfAssessmentRequest,
   WantedImprovement,
 } from "@/api/types";
 
-export interface GuestSelfAssessmentProfile {
-  name: string;
-  phone: string;
-  birthday: string;
-  gender: Gender;
-  heightCm: number;
-  weightKg: number;
-  email: string | null;
-  emergencyContact: string | null;
-  emergencyPhone: string | null;
-  consent: boolean;
-  consentVersion: "v1";
-}
-
 export interface GuestSelfAssessmentDraft {
-  profile: GuestSelfAssessmentProfile;
   assessment: SelfAssessmentRequest;
   provisionalRiskLevel: RiskLevel;
   /** 同一份草稿重送正式自評時沿用同一個 key。 */
@@ -32,7 +16,6 @@ export interface GuestSelfAssessmentDraft {
 
 export const GUEST_SELF_ASSESSMENT_DRAFT_KEY = "guest-self-assessment-draft";
 
-const GENDER_VALUES: Gender[] = ["male", "female"];
 const EXERCISE_FREQUENCY_VALUES: ExerciseFrequency[] = [
   "none",
   "oneToTwo",
@@ -79,30 +62,6 @@ function isStringArray<T extends string>(
   );
 }
 
-function isNullableString(value: unknown): value is string | null {
-  return value === null || typeof value === "string";
-}
-
-function isValidProfile(value: unknown): value is GuestSelfAssessmentProfile {
-  if (!isRecord(value)) {
-    return false;
-  }
-
-  return (
-    typeof value.name === "string" &&
-    typeof value.phone === "string" &&
-    typeof value.birthday === "string" &&
-    isOneOf(GENDER_VALUES, value.gender) &&
-    typeof value.heightCm === "number" &&
-    typeof value.weightKg === "number" &&
-    isNullableString(value.email) &&
-    isNullableString(value.emergencyContact) &&
-    isNullableString(value.emergencyPhone) &&
-    typeof value.consent === "boolean" &&
-    value.consentVersion === "v1"
-  );
-}
-
 function isValidAssessment(value: unknown): value is SelfAssessmentRequest {
   if (!isRecord(value)) {
     return false;
@@ -123,7 +82,6 @@ function isValidDraft(value: unknown): value is GuestSelfAssessmentDraft {
   }
 
   return (
-    isValidProfile(value.profile) &&
     isValidAssessment(value.assessment) &&
     isOneOf(RISK_LEVEL_VALUES, value.provisionalRiskLevel) &&
     (value.idempotencyKey === undefined ||
@@ -150,7 +108,7 @@ export function calculateProvisionalRiskLevel(
   return "low";
 }
 
-/** 僅在自評完成並確認送出後保存一份完整訪客草稿。 */
+/** 僅在自評完成並確認送出後保存不含身分資料的訪客草稿。 */
 export function saveGuestSelfAssessmentDraft(
   draft: GuestSelfAssessmentDraft,
 ): void {
@@ -183,7 +141,23 @@ export function readGuestSelfAssessmentDraft(): GuestSelfAssessmentDraft | null
     }
 
     const parsedDraft: unknown = JSON.parse(rawDraft);
-    return isValidDraft(parsedDraft) ? parsedDraft : null;
+    if (!isValidDraft(parsedDraft)) {
+      return null;
+    }
+
+    const sanitizedDraft: GuestSelfAssessmentDraft = {
+      assessment: {
+        ...parsedDraft.assessment,
+        wantedImprovements: [...parsedDraft.assessment.wantedImprovements],
+        chronicDiseases: [...parsedDraft.assessment.chronicDiseases],
+      },
+      provisionalRiskLevel: parsedDraft.provisionalRiskLevel,
+      ...(parsedDraft.idempotencyKey
+        ? { idempotencyKey: parsedDraft.idempotencyKey }
+        : {}),
+    };
+    saveGuestSelfAssessmentDraft(sanitizedDraft);
+    return sanitizedDraft;
   } catch {
     return null;
   }