diff --git a/src/components/modals/ShareModal.vue b/src/components/modals/ShareModal.vue
index 0af6fbc..3e628a5 100644
--- a/src/components/modals/ShareModal.vue
+++ b/src/components/modals/ShareModal.vue
@@ -34,18 +34,14 @@
             <!-- 对话分享预览 -->
             <div v-else class="selected-preview">
               <div class="preview-header">
-                <span class="preview-title">已选择 {{ selectedCount }} 个对话</span>
-                <span class="preview-hint">最多分享 10 个对话</span>
+                <span class="preview-title">当前对话</span>
+                <span class="preview-hint">仅支持单个对话分享</span>
               </div>
-              <div class="preview-list">
-                <div
-                  v-for="conv in selectedConversations"
-                  :key="conv.id"
-                  class="preview-item"
-                >
+              <div v-if="shareConversation" class="preview-list">
+                <div class="preview-item">
                   <MessageSquare :size="14" />
-                  <span class="item-title">{{ conv.title }}</span>
-                  <span class="item-count">{{ conv.messages.length }} 条消息</span>
+                  <span class="item-title">{{ shareConversation.title }}</span>
+                  <span class="item-count">{{ shareConversation.messages.length }} 条消息</span>
                 </div>
               </div>
             </div>
@@ -120,10 +116,15 @@ const settingsStore = useSettingsStore();
 const chatStore = useChatStore();
 
 const show = computed(() => settingsStore.showShareModal);
-const { selectedConversations, selectedCount, isMessageSelectMode, selectedMessages, selectedMessageCount } = storeToRefs(chatStore);
+const { shareConversationId } = storeToRefs(settingsStore);
+const { isMessageSelectMode, selectedMessages, selectedMessageCount } = storeToRefs(chatStore);
 
 // 是否是消息分享模式
 const isMessageShare = computed(() => isMessageSelectMode.value);
+const shareConversation = computed(() => {
+  if (!shareConversationId.value) return null;
+  return chatStore.conversations.find((c) => c.id === shareConversationId.value) || null;
+});
 
 const password = ref("");
 const showPassword = ref(false);
@@ -173,16 +174,13 @@ async function handleCreateShare() {
       });
     } else {
       // 对话分享模式
-      // 检查数量限制
-      if (selectedCount.value > SHARE_LIMITS.MAX_CONVERSATIONS) {
-        window.$toast?.(`最多分享 ${SHARE_LIMITS.MAX_CONVERSATIONS} 个对话`, 'error');
+      if (!shareConversation.value) {
+        window.$toast?.('请先选择要分享的对话', 'error');
         return;
       }
 
-      const conversationIds = selectedConversations.value.map(c => c.id);
-
       result = await shareApi.createShare({
-        conversationIds,
+        conversationIds: [shareConversation.value.id],
         passwordHash,
         expiresIn: SHARE_LIMITS.DEFAULT_EXPIRE_SECONDS,
       });
@@ -207,8 +205,6 @@ async function handleCreateShare() {
     password.value = "";
     if (isMessageShare.value) {
       chatStore.exitMessageSelectMode();
-    } else {
-      chatStore.exitSelectMode();
     }
 
   } catch (error) {
diff --git a/src/components/sidebar/ChatSidebar.vue b/src/components/sidebar/ChatSidebar.vue
index 634b9a5..4ed87dc 100644
--- a/src/components/sidebar/ChatSidebar.vue
+++ b/src/components/sidebar/ChatSidebar.vue
@@ -76,7 +76,7 @@
             <ConversationItem v-for="conv in pinnedConversations" :key="conv.id" :conversation="conv"
               :is-active="conv.id === currentConversationId" :is-select-mode="isSelectMode"
               :is-selected="isConversationSelected(conv.id)" @select="selectConversation" @delete="deleteConversation"
-              @rename="renameConversation" @toggle-pin="togglePinConversation"
+              @rename="renameConversation" @toggle-pin="togglePinConversation" @share="handleShareConversation"
               @toggle-select="toggleConversationSelection" />
           </div>
         </div>
@@ -91,7 +91,7 @@
             <ConversationItem v-for="conv in recentConversations" :key="conv.id" :conversation="conv"
               :is-active="conv.id === currentConversationId" :is-select-mode="isSelectMode"
               :is-selected="isConversationSelected(conv.id)" @select="selectConversation" @delete="deleteConversation"
-              @rename="renameConversation" @toggle-pin="togglePinConversation"
+              @rename="renameConversation" @toggle-pin="togglePinConversation" @share="handleShareConversation"
               @toggle-select="toggleConversationSelection" />
           </div>
         </div>
@@ -210,6 +210,10 @@ function togglePinConversation(id: string) {
   chatStore.togglePinConversation(id);
 }
 
+function handleShareConversation(id: string) {
+  settingsStore.openConversationShareModal(id);
+}
+
 function toggleConversationSelection(id: string) {
   chatStore.toggleConversationSelection(id);
 }
diff --git a/src/components/sidebar/ConversationItem.vue b/src/components/sidebar/ConversationItem.vue
index f04509e..b722e71 100644
--- a/src/components/sidebar/ConversationItem.vue
+++ b/src/components/sidebar/ConversationItem.vue
@@ -52,7 +52,7 @@
 
       <n-tooltip :style="{ borderRadius: '5px', padding: '7px 15px' }">
         <template #trigger>
-          <button class="action-btn" @click="handleDelete">
+          <button class="action-btn" @click="handleShare">
             <ShareIcon :size="14" />
           </button>
         </template>
@@ -108,6 +108,7 @@ const emit = defineEmits<{
   rename: [id: string, title: string];
   togglePin: [id: string];
   toggleSelect: [id: string];
+  share: [id: string];
 }>();
 
 const isEditing = ref(false);
@@ -134,6 +135,10 @@ function handleTogglePin() {
   emit("togglePin", props.conversation.id);
 }
 
+function handleShare() {
+  emit("share", props.conversation.id);
+}
+
 function handleRename() {
   if (props.isSelectMode) return;
   isEditing.value = true;
@@ -201,6 +206,11 @@ function handleDelete() {
     .item-title {
       font-weight: 700;
     }
+
+    .item-actions {
+      opacity: 1;
+      pointer-events: auto;
+    }
   }
 }
 
@@ -278,6 +288,10 @@ function handleDelete() {
   transition: opacity 0.2s ease;
 }
 
+.conversation-item.active .pin-indicator {
+  opacity: 0;
+}
+
 .action-btn {
   display: flex;
   align-items: center;
diff --git a/src/components/sidebar/ShareButton.vue b/src/components/sidebar/ShareButton.vue
index 0d9ab1d..0c56b28 100644
--- a/src/components/sidebar/ShareButton.vue
+++ b/src/components/sidebar/ShareButton.vue
@@ -1,32 +1,9 @@
 <template>
   <div class="share-button-wrapper">
-    <button
-      v-if="!isSelectMode"
-      class="share-btn"
-      :disabled="conversations.length === 0"
-      @click="handleStartSelect"
-    >
+    <button class="share-btn" :disabled="!currentConversation" @click="handleShareCurrent">
       <Share2 :size="16" />
       <span>分享对话</span>
     </button>
-
-    <div v-else class="select-actions">
-      <span class="select-info">
-        已选择 {{ selectedCount }} 个对话
-      </span>
-      <div class="action-buttons">
-        <button class="action-btn cancel" @click="handleCancel">
-          取消
-        </button>
-        <button
-          class="action-btn confirm"
-          :disabled="selectedCount === 0"
-          @click="handleConfirm"
-        >
-          确认分享
-        </button>
-      </div>
-    </div>
   </div>
 </template>
 
@@ -39,21 +16,12 @@ import { Share2 } from "@/components/icons";
 const chatStore = useChatStore();
 const settingsStore = useSettingsStore();
 
-const { isSelectMode, selectedCount, conversations } = storeToRefs(chatStore);
+const { currentConversation } = storeToRefs(chatStore);
 
-function handleStartSelect() {
-  chatStore.enterSelectMode();
-}
-
-function handleCancel() {
-  chatStore.exitSelectMode();
-}
-
-function handleConfirm() {
-  if (chatStore.selectedCount > 0) {
-    // 打开分享设置模态框
-    settingsStore.openShareModal();
-  }
+function handleShareCurrent() {
+  const conversation = currentConversation.value;
+  if (!conversation) return;
+  settingsStore.openConversationShareModal(conversation.id);
 }
 </script>
 
@@ -162,4 +130,4 @@ function handleConfirm() {
     }
   }
 }
-</style>
\ No newline at end of file
+</style>
diff --git a/src/router/index.ts b/src/router/index.ts
index 8b44679..2c8f84a 100644
--- a/src/router/index.ts
+++ b/src/router/index.ts
@@ -13,6 +13,7 @@ const router = createRouter({
       path: '/share/:id',
       name: 'share',
       component: () => import('@/views/ShareView.vue'),
+      alias: ['/chat-ui/share/:id'],
     },
     {
       path: '/demo/cards',
@@ -22,4 +23,4 @@ const router = createRouter({
   ],
 })
 
-export default router
\ No newline at end of file
+export default router
diff --git a/src/stores/settings.ts b/src/stores/settings.ts
index d9a532c..fd26f86 100644
--- a/src/stores/settings.ts
+++ b/src/stores/settings.ts
@@ -101,6 +101,7 @@ export const useSettingsStore = defineStore("settings", () => {
   const showShareModal = ref(false);
   const showShareResultModal = ref(false);
   const shareResult = ref<ShareResult | null>(null);
+  const shareConversationId = ref<string | null>(null);
 
   // 主题相关
   function applyTheme(theme: AppSettings["theme"]) {
@@ -196,8 +197,14 @@ export const useSettingsStore = defineStore("settings", () => {
     showShareModal.value = true;
   }
 
+  function openConversationShareModal(conversationId: string) {
+    shareConversationId.value = conversationId;
+    showShareModal.value = true;
+  }
+
   function closeShareModal() {
     showShareModal.value = false;
+    shareConversationId.value = null;
   }
 
   function openShareResultModal() {
@@ -343,6 +350,7 @@ export const useSettingsStore = defineStore("settings", () => {
     showShareModal,
     showShareResultModal,
     shareResult,
+    shareConversationId,
 
     // 方法
     toggleTheme,
@@ -360,6 +368,7 @@ export const useSettingsStore = defineStore("settings", () => {
     closeConversationSettingsModal,
     // 分享模态框方法
     openShareModal,
+    openConversationShareModal,
     closeShareModal,
     openShareResultModal,
     closeShareResultModal,
diff --git a/src/utils/helpers.ts b/src/utils/helpers.ts
index d801ca0..0dce253 100644
--- a/src/utils/helpers.ts
+++ b/src/utils/helpers.ts
@@ -10,21 +10,36 @@ export function formatTimestamp(timestamp: number): string {
   const date = new Date(timestamp);
   const now = new Date();
   const diff = now.getTime() - date.getTime();
+  const absDiff = Math.abs(diff);
 
-  if (diff < 60 * 1000) {
+  if (diff >= 0 && diff < 60 * 1000) {
     return "刚刚";
   }
 
-  if (diff < 60 * 60 * 1000) {
+  if (diff < 0 && absDiff < 60 * 1000) {
+    return "即将";
+  }
+
+  if (diff >= 0 && diff < 60 * 60 * 1000) {
     const minutes = Math.floor(diff / (60 * 1000));
     return `${minutes}分钟前`;
   }
 
-  if (diff < 24 * 60 * 60 * 1000) {
+  if (diff < 0 && absDiff < 60 * 60 * 1000) {
+    const minutes = Math.floor(absDiff / (60 * 1000));
+    return `${minutes}分钟后`;
+  }
+
+  if (diff >= 0 && diff < 24 * 60 * 60 * 1000) {
     const hours = Math.floor(diff / (60 * 60 * 1000));
     return `${hours}小时前`;
   }
 
+  if (diff < 0 && absDiff < 24 * 60 * 60 * 1000) {
+    const hours = Math.floor(absDiff / (60 * 60 * 1000));
+    return `${hours}小时后`;
+  }
+
   if (date.getFullYear() === now.getFullYear()) {
     return `${date.getMonth() + 1}月${date.getDate()}日 ${padZero(date.getHours())}:${padZero(date.getMinutes())}`;
   }