diff --git a/app/components/exporter.tsx b/app/components/exporter.tsx
index 381ff71d643..0c92272515b 100644
--- a/app/components/exporter.tsx
+++ b/app/components/exporter.tsx
@@ -46,7 +46,22 @@ const Markdown = dynamic(async () => (await import("./markdown")).Markdown, {
 export function ExportMessageModal(props: { onClose: () => void }) {
   return (
     <div className="modal-mask">
-      <Modal title={Locale.Export.Title} onClose={props.onClose}>
+      <Modal
+        title={Locale.Export.Title}
+        onClose={props.onClose}
+        footer={
+          <div
+            style={{
+              width: "100%",
+              textAlign: "center",
+              fontSize: 14,
+              opacity: 0.5,
+            }}
+          >
+            只有清除上下文之后的消息会被展示
+          </div>
+        }
+      >
         <div style={{ minHeight: "40vh" }}>
           <MessageExporter />
         </div>
@@ -154,7 +169,7 @@ export function MessageExporter() {
     if (exportConfig.includeContext) {
       ret.push(...session.mask.context);
     }
-    ret.push(...session.messages.filter((m, i) => selection.has(m.id)));
+    ret.push(...session.messages.filter((m) => selection.has(m.id)));
     return ret;
   }, [
     exportConfig.includeContext,
diff --git a/app/components/message-selector.module.scss b/app/components/message-selector.module.scss
index b4ba1a1412a..c8defb6b027 100644
--- a/app/components/message-selector.module.scss
+++ b/app/components/message-selector.module.scss
@@ -58,8 +58,8 @@
       }
 
       .body {
-        flex-grow: 1;
-        max-width: calc(100% - 40px);
+        flex: 1;
+        max-width: calc(100% - 80px);
 
         .date {
           font-size: 12px;
@@ -71,6 +71,12 @@
           font-size: 12px;
         }
       }
+
+      .checkbox {
+        display: flex;
+        justify-content: flex-end;
+        flex: 1;
+      }
     }
   }
 }
diff --git a/app/components/message-selector.tsx b/app/components/message-selector.tsx
index 5b25dcd5696..d4ebe0d7bfe 100644
--- a/app/components/message-selector.tsx
+++ b/app/components/message-selector.tsx
@@ -1,4 +1,4 @@
-import { useEffect, useState } from "react";
+import { useEffect, useMemo, useState } from "react";
 import { ChatMessage, useAppConfig, useChatStore } from "../store";
 import { Updater } from "../typing";
 import { IconButton } from "./button";
@@ -73,11 +73,23 @@ export function MessageSelector(props: {
   const chatStore = useChatStore();
   const session = chatStore.currentSession();
   const isValid = (m: ChatMessage) => m.content && !m.isError && !m.streaming;
-  const messages = session.messages.filter(
-    (m, i) =>
-      m.id && // message must have id
-      isValid(m) &&
-      (i >= session.messages.length - 1 || isValid(session.messages[i + 1])),
+  const allMessages = useMemo(() => {
+    let startIndex = Math.max(0, session.clearContextIndex ?? 0);
+    if (startIndex === session.messages.length - 1) {
+      startIndex = 0;
+    }
+    return session.messages.slice(startIndex);
+  }, [session.messages, session.clearContextIndex]);
+
+  const messages = useMemo(
+    () =>
+      allMessages.filter(
+        (m, i) =>
+          m.id && // message must have id
+          isValid(m) &&
+          (i >= allMessages.length - 1 || isValid(allMessages[i + 1])),
+      ),
+    [allMessages],
   );
   const messageCount = messages.length;
   const config = useAppConfig();
@@ -176,6 +188,8 @@ export function MessageSelector(props: {
       <div className={styles["messages"]}>
         {messages.map((m, i) => {
           if (!isInSearchResult(m.id!)) return null;
+          const id = m.id ?? i;
+          const isSelected = props.selection.has(id);
 
           return (
             <div
@@ -185,7 +199,6 @@ export function MessageSelector(props: {
               key={i}
               onClick={() => {
                 props.updateSelection((selection) => {
-                  const id = m.id ?? i;
                   selection.has(id) ? selection.delete(id) : selection.add(id);
                 });
                 onClickIndex(i);
@@ -206,6 +219,10 @@ export function MessageSelector(props: {
                   {m.content}
                 </div>
               </div>
+
+              <div className={styles["checkbox"]}>
+                <input type="checkbox" checked={isSelected}></input>
+              </div>
             </div>
           );
         })}
diff --git a/app/components/ui-lib.tsx b/app/components/ui-lib.tsx
index 0c927728a4e..f7e326fd318 100644
--- a/app/components/ui-lib.tsx
+++ b/app/components/ui-lib.tsx
@@ -97,8 +97,9 @@ export function Loading() {
 interface ModalProps {
   title: string;
   children?: any;
-  actions?: JSX.Element[];
+  actions?: React.ReactNode[];
   defaultMax?: boolean;
+  footer?: React.ReactNode;
   onClose?: () => void;
 }
 export function Modal(props: ModalProps) {
@@ -147,6 +148,7 @@ export function Modal(props: ModalProps) {
       <div className={styles["modal-content"]}>{props.children}</div>
 
       <div className={styles["modal-footer"]}>
+        {props.footer}
         <div className={styles["modal-actions"]}>
           {props.actions?.map((action, i) => (
             <div key={i} className={styles["modal-action"]}>