diff --git a/resources/js/chat-room.js b/resources/js/chat-room.js
index 765923d..5518539 100644
--- a/resources/js/chat-room.js
+++ b/resources/js/chat-room.js
@@ -64,8 +64,10 @@ export { bindChatToast } from "./chat-room/toast.js";
 export { bindChatComposerControls, setChatComposerAction } from "./chat-room/composer.js";
 export {
     isExpiredChatImageMessage,
+    isAutoScrollEnabled,
     localClearScreen,
     scrollChatToBottom,
+    setAutoScrollEnabled,
     syncAutoScrollControls,
     toggleAutoScroll,
 } from "./chat-room/message-utils.js";
@@ -319,8 +321,10 @@ if (typeof window !== "undefined") {
         bindChatComposerControls,
         setChatComposerAction,
         isExpiredChatImageMessage,
+        isAutoScrollEnabled,
         localClearScreen,
         scrollChatToBottom,
+        setAutoScrollEnabled,
         syncAutoScrollControls,
         toggleAutoScroll,
         bindInstantHoverTooltip,
@@ -592,8 +596,10 @@ if (typeof window !== "undefined") {
     // ── 静态核心模块 window 挂载 ──
     window.escapeHtml = escapeHtml;
     window.isExpiredChatImageMessage = isExpiredChatImageMessage;
+    window.isChatAutoScrollEnabled = isAutoScrollEnabled;
     window.localClearScreen = localClearScreen;
     window.normalizeSafeChatUrl = normalizeSafeChatUrl;
+    window.setChatAutoScrollEnabled = setAutoScrollEnabled;
     window.setAction = setChatComposerAction;
     window.syncAutoScrollControls = syncAutoScrollControls;
 
diff --git a/resources/js/chat-room/appointment-announcement.js b/resources/js/chat-room/appointment-announcement.js
index dbd4c7c..8b5a320 100644
--- a/resources/js/chat-room/appointment-announcement.js
+++ b/resources/js/chat-room/appointment-announcement.js
@@ -1,6 +1,7 @@
 // 聊天室任命/撤销公告监听，负责渲染大卡片和频道内系统提示。
 
 import { escapeHtml } from "./html.js";
+import { isAutoScrollEnabled, scrollChatToBottom } from "./message-utils.js";
 
 const APPOINTMENT_PHRASES = [
     "望再接再厉，大展宏图，为大家服务！",
@@ -132,7 +133,7 @@ function appendAppointmentMessage(container, message) {
     }
 
     container.appendChild(message);
-    container.scrollTop = container.scrollHeight;
+    scrollChatToBottom(container, isAutoScrollEnabled);
 }
 
 /**
diff --git a/resources/js/chat-room/chat-events.js b/resources/js/chat-room/chat-events.js
index b47b7bc..5dab2f3 100644
--- a/resources/js/chat-room/chat-events.js
+++ b/resources/js/chat-room/chat-events.js
@@ -4,6 +4,7 @@
 import { escapeHtml, normalizeSafeChatUrl } from "./html.js";
 import { normalizeDailyStatus } from "./preferences-status.js";
 import { enqueueChatMessage } from "./message-renderer.js";
+import { isAutoScrollEnabled, scrollChatToBottom } from "./message-utils.js";
 
 // ── 事件注册标记 ──
 let chatEventsBound = false;
@@ -19,6 +20,16 @@ function getState() {
     return window.chatState;
 }
 
+/**
+ * 在开启自动滚屏时把指定聊天窗格滚动到底部。
+ *
+ * @param {HTMLElement|null|undefined} container 聊天消息容器
+ * @returns {void}
+ */
+function scrollWhenEnabled(container) {
+    scrollChatToBottom(container, isAutoScrollEnabled);
+}
+
 /**
  * 启动 WebSocket 初始化（DOMContentLoaded 之后调用）。
  */
@@ -79,7 +90,7 @@ function handleMutedEvent(e) {
         : (state?.container);
     if (targetContainer) {
         targetContainer.appendChild(div);
-        targetContainer.scrollTop = targetContainer.scrollHeight;
+        scrollWhenEnabled(targetContainer);
     }
 
     if (isMe && d.mute_time > 0) {
@@ -99,7 +110,7 @@ function handleMutedEvent(e) {
                 const say2 = document.getElementById("say2");
                 if (say2) {
                     say2.appendChild(unmuteDiv);
-                    say2.scrollTop = say2.scrollHeight;
+                    scrollWhenEnabled(say2);
                 }
             }, d.mute_time * 60 * 1000);
         }
@@ -148,7 +159,7 @@ function setupScreenClearedListener() {
             sysDiv.innerHTML = `<span style="color: #dc2626; font-weight: bold;">🧹 管理员 <b>${safeOperator}</b> 已执行全员清屏</span><span class="msg-time">(${timeStr})</span>`;
             if (say1) {
                 say1.appendChild(sysDiv);
-                say1.scrollTop = say1.scrollHeight;
+                scrollWhenEnabled(say1);
             }
         });
 }
@@ -205,7 +216,7 @@ function setupChangelogPublishedListener() {
             const say1 = document.getElementById("chat-messages-container");
             if (say1) {
                 say1.appendChild(sysDiv);
-                say1.scrollTop = say1.scrollHeight;
+                scrollWhenEnabled(say1);
             }
         });
 }
@@ -255,7 +266,7 @@ function setupGomokuInviteListener() {
             const say1 = document.getElementById("chat-messages-container");
             if (say1) {
                 say1.appendChild(div);
-                say1.scrollTop = say1.scrollHeight;
+                scrollWhenEnabled(say1);
             }
 
             if (!isSelf) {
@@ -294,7 +305,7 @@ function setupGomokuInviteListener() {
             const say1 = document.getElementById("chat-messages-container");
             if (say1) {
                 say1.appendChild(div);
-                say1.scrollTop = say1.scrollHeight;
+                scrollWhenEnabled(say1);
             }
         });
 }
diff --git a/resources/js/chat-room/composer.js b/resources/js/chat-room/composer.js
index 3def3c8..f5f4dea 100644
--- a/resources/js/chat-room/composer.js
+++ b/resources/js/chat-room/composer.js
@@ -1,6 +1,8 @@
 // 聊天输入区完整逻辑：发送消息、草稿管理、IME 防重、神秘箱子暗号拦截。
 // 从 Blade 内联脚本 scripts.blade.php 迁移至 Vite 模块。
 
+import { isAutoScrollEnabled, scrollChatToBottom } from "./message-utils.js";
+
 let chatComposerEventsBound = false;
 
 function csrf() {
@@ -165,7 +167,7 @@ async function sendMessage(e) {
         const say2 = document.getElementById("say2");
         if (say2) {
             say2.appendChild(muteDiv);
-            say2.scrollTop = say2.scrollHeight;
+            scrollChatToBottom(say2, isAutoScrollEnabled);
         }
         if (state) {
             state.isSending = false;
diff --git a/resources/js/chat-room/marriage-modals.js b/resources/js/chat-room/marriage-modals.js
index 66bbe7e..6eeaf99 100644
--- a/resources/js/chat-room/marriage-modals.js
+++ b/resources/js/chat-room/marriage-modals.js
@@ -1,5 +1,7 @@
 // 婚姻弹窗辅助入口，承接从 marriage-modals.blade.php 迁移出的全局函数。
 
+import { isAutoScrollEnabled, scrollChatToBottom } from "./message-utils.js";
+
 /**
  * 向聊天主窗口追加一条婚姻系统公告，允许传入受控 HTML 按钮。
  *
@@ -17,7 +19,7 @@ export function appendSystemMessage(html) {
     div.style.cssText = "background:linear-gradient(135deg,#fdf4ff,#fce7f3); border-left:3px solid #ec4899; border-radius:6px; padding:5px 12px; margin:3px 0; font-size:13px; line-height:1.6;";
     div.innerHTML = `<span style="color:#9d174d;">${html}</span>`;
     container.appendChild(div);
-    container.scrollTop = container.scrollHeight;
+    scrollChatToBottom(container, isAutoScrollEnabled);
 }
 
 /**
diff --git a/resources/js/chat-room/message-utils.js b/resources/js/chat-room/message-utils.js
index 0103e84..8f9a998 100644
--- a/resources/js/chat-room/message-utils.js
+++ b/resources/js/chat-room/message-utils.js
@@ -75,10 +75,46 @@ export function localClearScreen(roomId = window.chatContext?.roomId, maxMessage
 
     if (publicPane) {
         publicPane.appendChild(notice);
-        publicPane.scrollTop = publicPane.scrollHeight;
+        scrollChatToBottom(publicPane, isAutoScrollEnabled);
     }
 }
 
+/**
+ * 读取当前是否允许聊天窗口自动滚屏。
+ *
+ * @returns {boolean}
+ */
+export function isAutoScrollEnabled() {
+    const state = window.chatState;
+
+    if (state && typeof state.autoScroll !== "undefined") {
+        return Boolean(state.autoScroll);
+    }
+
+    const checkbox = document.getElementById("auto_scroll");
+
+    return checkbox ? Boolean(checkbox.checked) : true;
+}
+
+/**
+ * 写入自动滚屏状态，并同步页面复选框和状态文字。
+ *
+ * @param {boolean} enabled 是否开启自动滚屏
+ * @returns {boolean}
+ */
+export function setAutoScrollEnabled(enabled) {
+    const nextEnabled = Boolean(enabled);
+    const state = window.chatState;
+
+    if (state) {
+        state.autoScroll = nextEnabled;
+    }
+
+    syncAutoScrollControls(nextEnabled);
+
+    return nextEnabled;
+}
+
 /**
  * 同步自动滚屏复选框与状态文字。
  *
@@ -111,6 +147,8 @@ export function toggleAutoScroll(getCurrent, setCurrent) {
 
     if (typeof setCurrent === "function") {
         setCurrent(nextEnabled);
+    } else {
+        setAutoScrollEnabled(nextEnabled);
     }
 
     syncAutoScrollControls(nextEnabled);