diff --git a/apps/web/src/data/ledgers.ts b/apps/web/src/data/ledgers.ts
index ade960b..557c9ee 100644
--- a/apps/web/src/data/ledgers.ts
+++ b/apps/web/src/data/ledgers.ts
@@ -1,4 +1,4 @@
-import { ledgerThemeAccents, type CurrencyCode, type LedgerThemeId } from "@cents/domain";
+import { ledgerThemeAccents, type CurrencyCode, type LedgerAmountDisplayMode, type LedgerThemeId } from "@cents/domain";
 
 export const ledgerThemes: ReadonlyArray<{
   id: LedgerThemeId;
@@ -30,6 +30,7 @@ export type LedgerRecord = {
   color: string;
   theme: LedgerThemeId;
   defaultCurrency: CurrencyCode;
+  amountDisplay: LedgerAmountDisplayMode;
   createdAt: string;
   updatedAt: string;
   archivedAt: string | null;
@@ -40,7 +41,7 @@ export type LedgerRecord = {
 export type UserPreference = {
   id: string;
   userId: string;
-  key: "currentLedgerId";
+  key: "currentLedgerId" | "ledgerAmountDisplay";
   value: string;
   updatedAt: string;
 };
@@ -49,6 +50,10 @@ export function currentLedgerPreferenceId(userId: string) {
   return `${userId}:currentLedgerId`;
 }
 
+export function ledgerAmountDisplayPreferenceId(userId: string, ledgerId: string) {
+  return `${userId}:ledgerAmountDisplay:${ledgerId}`;
+}
+
 export function createDefaultLedgers(): LedgerRecord[] {
   const now = new Date().toISOString();
   return [
@@ -58,6 +63,7 @@ export function createDefaultLedgers(): LedgerRecord[] {
       color: "#087f72",
       theme: "jade",
       defaultCurrency: "CNY",
+      amountDisplay: "base",
       createdAt: now,
       updatedAt: now,
       archivedAt: null,
@@ -69,6 +75,7 @@ export function createDefaultLedgers(): LedgerRecord[] {
       color: "#3478e5",
       theme: "ocean",
       defaultCurrency: "CNY",
+      amountDisplay: "base",
       createdAt: now,
       updatedAt: now,
       archivedAt: null,
diff --git a/apps/web/src/stores/ledgers.ts b/apps/web/src/stores/ledgers.ts
index 37bcc84..a4bcab8 100644
--- a/apps/web/src/stores/ledgers.ts
+++ b/apps/web/src/stores/ledgers.ts
@@ -1,7 +1,8 @@
 import { defineStore } from "pinia";
 import { apiRequest } from "../data/api";
 import { db } from "../data/db";
-import { currentLedgerPreferenceId, type LedgerRecord, type UserPreference } from "../data/ledgers";
+import { currentLedgerPreferenceId, ledgerAmountDisplayPreferenceId, type LedgerRecord, type UserPreference } from "../data/ledgers";
+import type { LedgerAmountDisplayMode } from "@cents/domain";
 import { useAuthStore } from "./auth";
 
 export type LedgerMember = {
@@ -39,7 +40,18 @@ export const useLedgerStore = defineStore("ledgers", {
         const auth = useAuthStore();
         if (!auth.user) return;
         const result = await apiRequest<{ ledgers: LedgerRecord[] }>("/api/ledgers");
-        const serverLedgers = result.ledgers.map((ledger) => ({ ...ledger }));
+        const displayPreferences = await db.userPreferences
+          .where("userId")
+          .equals(auth.user.id)
+          .filter((preference) => preference.key === "ledgerAmountDisplay")
+          .toArray();
+        const displayByLedger = new Map(
+          displayPreferences.map((preference) => [preference.id.split(":").at(-1), preference.value as LedgerAmountDisplayMode]),
+        );
+        const serverLedgers = result.ledgers.map((ledger) => ({
+          ...ledger,
+          amountDisplay: displayByLedger.get(ledger.id) ?? "base",
+        }));
         this.ledgers = serverLedgers;
 
         const allowedIds = new Set(this.ledgers.map((ledger) => ledger.id));
@@ -118,8 +130,22 @@ export const useLedgerStore = defineStore("ledgers", {
       await this.setCurrentLedger(result.ledger.id);
       return result.ledger;
     },
-    async updateLedger(input: Pick<LedgerRecord, "id" | "name" | "color" | "theme" | "defaultCurrency">) {
-      await apiRequest(`/api/ledgers/${encodeURIComponent(input.id)}`, { method: "PATCH", body: input });
+    async updateLedger(input: Pick<LedgerRecord, "id" | "name" | "color" | "theme" | "defaultCurrency"> & { amountDisplay?: LedgerAmountDisplayMode }) {
+      const { amountDisplay, ...serverInput } = input;
+      await apiRequest(`/api/ledgers/${encodeURIComponent(input.id)}`, { method: "PATCH", body: serverInput });
+      if (amountDisplay) {
+        const auth = useAuthStore();
+        if (auth.user) {
+          const preference: UserPreference = {
+            id: ledgerAmountDisplayPreferenceId(auth.user.id, input.id),
+            userId: auth.user.id,
+            key: "ledgerAmountDisplay",
+            value: amountDisplay,
+            updatedAt: new Date().toISOString(),
+          };
+          await db.userPreferences.put(preference);
+        }
+      }
       await this.reloadLedgers();
       return this.ledgers.find((ledger) => ledger.id === input.id)!;
     },
diff --git a/apps/web/src/styles.css b/apps/web/src/styles.css
index 399094a..9723c8a 100644
--- a/apps/web/src/styles.css
+++ b/apps/web/src/styles.css
@@ -92,35 +92,11 @@ input:focus-visible {
 
 .top-actions {
   display: grid;
-  grid-template-columns: 56px minmax(0, 1fr) auto;
+  grid-template-columns: 56px 1fr 40px;
   align-items: center;
   gap: 10px;
 }
 
-.header-right-actions {
-  display: flex;
-  align-items: center;
-  justify-content: flex-end;
-  gap: 6px;
-}
-
-.currency-display-button {
-  width: 34px;
-  height: 34px;
-  display: inline-grid;
-  place-items: center;
-  border: 1px solid rgba(255, 255, 255, 0.28);
-  border-radius: 7px;
-  padding: 0;
-  background: rgba(0, 0, 0, 0.12);
-  color: rgba(255, 255, 255, 0.82);
-}
-
-.currency-display-button.active {
-  background: rgba(255, 255, 255, 0.2);
-  color: #ffffff;
-}
-
 .participant-avatars {
   width: 56px;
   height: 40px;
diff --git a/apps/web/src/views/LedgerSettingsView.vue b/apps/web/src/views/LedgerSettingsView.vue
index 1b1192c..45cf766 100644
--- a/apps/web/src/views/LedgerSettingsView.vue
+++ b/apps/web/src/views/LedgerSettingsView.vue
@@ -1,5 +1,5 @@
 <script setup lang="ts">
-import type { CurrencyCode, LedgerThemeId } from "@cents/domain";
+import type { CurrencyCode, LedgerAmountDisplayMode, LedgerThemeId } from "@cents/domain";
 import { ArrowLeft, Check } from "@lucide/vue";
 import { onMounted, ref } from "vue";
 import { useRouter } from "vue-router";
@@ -11,6 +11,7 @@ const ledgerStore = useLedgerStore();
 const name = ref("");
 const themeId = ref<LedgerThemeId>("jade");
 const currency = ref<CurrencyCode>("CNY");
+const amountDisplay = ref<LedgerAmountDisplayMode>("base");
 const saving = ref(false);
 
 onMounted(async () => {
@@ -23,13 +24,14 @@ onMounted(async () => {
   name.value = ledgerStore.currentLedger.name;
   themeId.value = ledgerStore.currentLedger.theme;
   currency.value = ledgerStore.currentLedger.defaultCurrency;
+  amountDisplay.value = ledgerStore.currentLedger.amountDisplay;
 });
 
 async function save() {
   if (!ledgerStore.currentLedger || !name.value.trim()) return;
   saving.value = true;
   const theme = ledgerTheme(themeId.value);
-  await ledgerStore.updateLedger({ id: ledgerStore.currentLedger.id, name: name.value, color: theme.accent, theme: theme.id, defaultCurrency: currency.value });
+  await ledgerStore.updateLedger({ id: ledgerStore.currentLedger.id, name: name.value, color: theme.accent, theme: theme.id, defaultCurrency: currency.value, amountDisplay: amountDisplay.value });
   saving.value = false;
   await router.back();
 }
@@ -45,6 +47,7 @@ async function save() {
       <section>
         <label><span>账本名称</span><input v-model="name" maxlength="24" :disabled="ledgerStore.currentLedger?.isPersonal" required /></label>
         <label><span>默认币种 · 暂不可修改</span><select v-model="currency" disabled title="默认币种暂不可修改"><option value="CNY">人民币 CNY</option><option value="USD">美元 USD</option><option value="EUR">欧元 EUR</option><option value="JPY">日元 JPY</option><option value="THB">泰铢 THB</option><option value="HKD">港币 HKD</option></select></label>
+        <label><span>流水金额显示</span><select v-model="amountDisplay"><option value="base">本币金额</option><option value="original">原币金额</option></select></label>
       </section>
       <section class="color-setting">
         <span>账本主题</span>
diff --git a/apps/web/src/views/LedgerView.vue b/apps/web/src/views/LedgerView.vue
index 06537c1..010b6e5 100644
--- a/apps/web/src/views/LedgerView.vue
+++ b/apps/web/src/views/LedgerView.vue
@@ -2,7 +2,6 @@
 import { formatCurrencyAmount, type LedgerEntry } from "@cents/domain";
 import {
   BookOpen,
-  ArrowLeftRight,
   ChevronLeft,
   ChevronDown,
   ChevronRight,
@@ -33,7 +32,7 @@ const store = useEntryStore();
 const ledgerStore = useLedgerStore();
 const router = useRouter();
 const moreMenuOpen = ref(false);
-const showBaseCurrency = ref(true);
+const showBaseCurrency = computed(() => ledgerStore.currentLedger?.amountDisplay !== "original");
 const participantOpen = ref(false);
 const shareOpen = ref(false);
 const shareFeedback = ref("");
@@ -437,22 +436,9 @@ async function shareLedger() {
           <span>{{ ledgerStore.currentLedger?.name ?? "选择账本" }}</span>
           <ChevronDown :size="16" />
         </button>
-        <div class="header-right-actions">
-          <button
-            class="currency-display-button"
-            type="button"
-            :class="{ active: showBaseCurrency }"
-            :aria-label="showBaseCurrency ? '当前显示本币，点击显示原币' : '当前显示原币，点击显示本币'"
-            :title="showBaseCurrency ? '当前显示本币，点击切换为原币' : '当前显示原币，点击切换为本币'"
-            :aria-pressed="showBaseCurrency"
-            @click="showBaseCurrency = !showBaseCurrency"
-          >
-            <ArrowLeftRight :size="17" />
-          </button>
-          <button v-if="ledgerStore.currentRole === 'owner'" class="icon-button header-icon" type="button" aria-label="更多" title="更多" @click.stop="moreMenuOpen = true">
-            <MoreHorizontal :size="21" />
-          </button>
-        </div>
+        <button v-if="ledgerStore.currentRole === 'owner'" class="icon-button header-icon" type="button" aria-label="更多" title="更多" @click.stop="moreMenuOpen = true">
+          <MoreHorizontal :size="21" />
+        </button>
       </div>
 
       <Transition name="more-menu">
diff --git a/packages/domain/src/index.ts b/packages/domain/src/index.ts
index b030a04..bca6976 100644
--- a/packages/domain/src/index.ts
+++ b/packages/domain/src/index.ts
@@ -68,6 +68,8 @@ export const ledgerThemeAccents = {
 
 export type LedgerThemeId = keyof typeof ledgerThemeAccents;
 
+export type LedgerAmountDisplayMode = "base" | "original";
+
 export type LedgerEntry = {
   id: string;
   ownerId: string;