diff --git a/src/components/chat/GlobalChatbox.tsx b/src/components/chat/GlobalChatbox.tsx
index eac479f..4f0f238 100644
--- a/src/components/chat/GlobalChatbox.tsx
+++ b/src/components/chat/GlobalChatbox.tsx
@@ -36,6 +36,8 @@ import VolumeUpRounded from "@mui/icons-material/VolumeUpRounded";
 import PauseRounded from "@mui/icons-material/PauseRounded";
 import PlayArrowRounded from "@mui/icons-material/PlayArrowRounded";
 import MicRounded from "@mui/icons-material/MicRounded";
+import KeyboardArrowDownRounded from "@mui/icons-material/KeyboardArrowDownRounded";
+import KeyboardArrowUpRounded from "@mui/icons-material/KeyboardArrowUpRounded";
 
 // Logic
 import { streamCopilotChat } from "@/lib/chatStream";
@@ -113,6 +115,12 @@ type PersistedChatState = {
   conversationId?: string;
 };
 
+const PRESET_PROMPTS = [
+  "帮我分析当前管网压力异常点，并按风险等级排序。",
+  "基于当前状态，给出今天的巡检优先级和建议路线。",
+  "帮我生成一份今日运行简报，包含问题、原因和建议。",
+];
+
 const getInitialChatState = (): PersistedChatState => {
   if (typeof window === "undefined") {
     return { messages: [], conversationId: undefined };
@@ -537,6 +545,7 @@ export const GlobalChatbox: React.FC<Props> = ({ open, onClose }) => {
     initialChatStateRef.current.conversationId
   );
   const [headerMenuAnchorEl, setHeaderMenuAnchorEl] = useState<HTMLElement | null>(null);
+  const [isPresetPanelOpen, setIsPresetPanelOpen] = useState(false);
   const abortRef = useRef<AbortController | null>(null);
   const bottomRef = useRef<HTMLDivElement>(null);
   const inputRef = useRef<HTMLInputElement | null>(null);
@@ -590,79 +599,88 @@ export const GlobalChatbox: React.FC<Props> = ({ open, onClose }) => {
     }
   }, [messages, conversationId]);
 
+  const sendPrompt = useCallback(
+    async (rawPrompt: string) => {
+      const prompt = rawPrompt.trim();
+      if (!prompt || isStreaming) return;
+      stopListening();
+
+      const userId = createId();
+      const assistantId = createId();
+      setInput("");
+      setIsStreaming(true);
+
+      setMessages((prev) => [
+        ...prev,
+        { id: userId, role: "user", content: prompt },
+        { id: assistantId, role: "assistant", content: "" },
+      ]);
+
+      const controller = new AbortController();
+      abortRef.current = controller;
+
+      try {
+        await streamCopilotChat({
+          message: prompt,
+          conversationId,
+          signal: controller.signal,
+          onEvent: (event) => {
+            if (event.type === "token") {
+              if (!conversationId && event.conversationId) setConversationId(event.conversationId);
+              const normalizedToken = normalizeThoughtTagToken(event.content);
+              setMessages((prev) =>
+                prev.map((m) =>
+                  m.id === assistantId
+                    ? { ...m, content: m.content + normalizedToken, isError: false }
+                    : m
+                )
+              );
+            } else if (event.type === "done") {
+              if (!conversationId && event.conversationId) setConversationId(event.conversationId);
+              setIsStreaming(false);
+            } else if (event.type === "error") {
+              setMessages((prev) =>
+                prev.map((m) =>
+                  m.id === assistantId
+                    ? {
+                        ...m,
+                        content: m.content || `⚠️ **错误：** ${event.message}`,
+                        isError: true,
+                      }
+                    : m
+                )
+              );
+              setIsStreaming(false);
+            }
+          },
+        });
+      } catch (error) {
+        if (abortRef.current?.signal.aborted) {
+          setMessages((prev) =>
+            prev.filter((m) => !(m.id === assistantId && m.role === "assistant" && m.content.trim().length === 0))
+          );
+          return;
+        }
+        setMessages((prev) =>
+          prev.map((m) =>
+            m.id === assistantId
+              ? { ...m, content: `⚠️ **错误：** ${String(error)}`, isError: true }
+              : m
+          )
+        );
+        setIsStreaming(false);
+      } finally {
+        abortRef.current = null;
+        setIsStreaming(false);
+      }
+    },
+    [conversationId, isStreaming, stopListening],
+  );
+
   const handleSend = async () => {
     const prompt = input.trim();
     if (!prompt || isStreaming) return;
-    stopListening();
-
-    const userId = createId();
-    const assistantId = createId();
-    setInput("");
-    setIsStreaming(true);
-
-    setMessages((prev) => [
-      ...prev,
-      { id: userId, role: "user", content: prompt },
-      { id: assistantId, role: "assistant", content: "" },
-    ]);
-
-    const controller = new AbortController();
-    abortRef.current = controller;
-
-    try {
-      await streamCopilotChat({
-        message: prompt,
-        conversationId,
-        signal: controller.signal,
-        onEvent: (event) => {
-          if (event.type === "token") {
-            if (!conversationId && event.conversationId) setConversationId(event.conversationId);
-            const normalizedToken = normalizeThoughtTagToken(event.content);
-            setMessages((prev) =>
-              prev.map((m) =>
-                m.id === assistantId
-                  ? { ...m, content: m.content + normalizedToken, isError: false }
-                  : m
-              )
-            );
-          } else if (event.type === "done") {
-            if (!conversationId && event.conversationId) setConversationId(event.conversationId);
-            setIsStreaming(false);
-          } else if (event.type === "error") {
-            setMessages((prev) =>
-              prev.map((m) =>
-                m.id === assistantId
-                  ? {
-                      ...m,
-                      content: m.content || `⚠️ **错误：** ${event.message}`,
-                      isError: true,
-                    }
-                  : m
-              )
-            );
-            setIsStreaming(false);
-          }
-        },
-      });
-    } catch (error) {
-      if (abortRef.current?.signal.aborted) {
-        setMessages((prev) =>
-          prev.filter((m) => !(m.id === assistantId && m.role === "assistant" && m.content.trim().length === 0))
-        );
-        return;
-      }
-      setMessages((prev) =>
-        prev.map((m) =>
-          m.id === assistantId
-            ? { ...m, content: `⚠️ **错误：** ${String(error)}`, isError: true }
-            : m
-        )
-      );
-      setIsStreaming(false);
-    } finally {
-      abortRef.current = null;
-      setIsStreaming(false);
-    }
+    await sendPrompt(prompt);
   };
 
   const handleAbort = () => {
@@ -670,6 +688,14 @@ export const GlobalChatbox: React.FC<Props> = ({ open, onClose }) => {
     setIsStreaming(false);
   };
 
+  const handlePresetPromptSelect = useCallback((prompt: string) => {
+    setInput(prompt);
+    setIsPresetPanelOpen(false);
+    window.setTimeout(() => {
+      inputRef.current?.focus();
+    }, 0);
+  }, []);
+
   const handleHeaderMenuOpen = useCallback(
     (event: React.MouseEvent<HTMLElement>) => {
       setHeaderMenuAnchorEl(event.currentTarget);
@@ -913,7 +939,18 @@ export const GlobalChatbox: React.FC<Props> = ({ open, onClose }) => {
         </Box>
 
         {/* Messages - Bouncy List */}
-        <Box sx={{ flex: 1, overflowY: "auto", px: 2.5, py: 2, display: "flex", flexDirection: "column", gap: 2.5, zIndex: 5 }}>
+        <Box
+          sx={{
+            flex: 1,
+            overflowY: "auto",
+            px: 2.5,
+            py: 2,
+            display: "flex",
+            flexDirection: "column",
+            gap: 2.5,
+            zIndex: 5,
+          }}
+        >
             <AnimatePresence initial={false}>
             {messages.length === 0 && (
                 <motion.div
@@ -980,6 +1017,104 @@ export const GlobalChatbox: React.FC<Props> = ({ open, onClose }) => {
 
         {/* Input Area - Floating Capsule */}
         <Box sx={{ p: 3, zIndex: 10 }}>
+          <Box sx={{ mb: 1.25, display: "flex", justifyContent: "flex-end" }}>
+            <Box sx={{ position: "relative", width: "100%", maxWidth: 520, display: "flex", justifyContent: "flex-end" }}>
+              <AnimatePresence initial={false}>
+                {isPresetPanelOpen && (
+                  <motion.div
+                    initial={{ opacity: 0, y: 8, scale: 0.98 }}
+                    animate={{ opacity: 1, y: 0, scale: 1 }}
+                    exit={{ opacity: 0, y: 8, scale: 0.98 }}
+                    transition={{ type: "spring", stiffness: 320, damping: 26 }}
+                    style={{ position: "absolute", right: 0, bottom: "calc(100% + 10px)", width: "100%", zIndex: 3 }}
+                  >
+                    <Paper
+                      elevation={12}
+                      sx={{
+                        p: 1.2,
+                        borderRadius: 3,
+                        bgcolor: alpha("#fff", 0.92),
+                        backdropFilter: "blur(12px)",
+                        border: `1px solid ${alpha(theme.palette.divider, 0.12)}`,
+                        boxShadow: `0 20px 48px -20px ${alpha(theme.palette.common.black, 0.3)}`,
+                      }}
+                    >
+                      <Stack spacing={0.8}>
+                        {PRESET_PROMPTS.map((prompt, index) => (
+                          <Box
+                            key={`preset-${index}`}
+                            component="button"
+                            type="button"
+                            onClick={() => handlePresetPromptSelect(prompt)}
+                            sx={{
+                              textAlign: "left",
+                              width: "100%",
+                              px: 1.1,
+                              py: 0.9,
+                              borderRadius: 2,
+                              border: `1px solid ${alpha(theme.palette.divider, 0.24)}`,
+                              bgcolor: alpha("#fff", 0.72),
+                              color: "text.secondary",
+                              fontSize: "0.84rem",
+                              lineHeight: 1.45,
+                              cursor: "pointer",
+                              transition: "all 0.18s ease",
+                              "&:hover": {
+                                borderColor: alpha(theme.palette.primary.main, 0.45),
+                                color: "text.primary",
+                                transform: "translateY(-1px)",
+                                boxShadow: `0 8px 24px -16px ${alpha(theme.palette.primary.main, 0.6)}`,
+                              },
+                            }}
+                          >
+                            {prompt}
+                          </Box>
+                        ))}
+                      </Stack>
+                    </Paper>
+                  </motion.div>
+                )}
+              </AnimatePresence>
+
+              <motion.div whileHover={{ y: -1 }} whileTap={{ scale: 0.98 }}>
+              <Paper
+                elevation={10}
+                sx={{
+                  borderRadius: 99,
+                  border: `1px solid ${alpha(theme.palette.divider, 0.1)}`,
+                  bgcolor: alpha("#fff", 0.9),
+                  backdropFilter: "blur(10px)",
+                  boxShadow: `0 14px 40px -14px ${alpha(theme.palette.primary.main, 0.35)}`,
+                  overflow: "hidden",
+                }}
+              >
+                <Stack direction="row" alignItems="center" spacing={1} sx={{ pl: 1.2, pr: 0.5, py: 0.5 }}>
+                  <Avatar
+                    sx={{
+                      width: 28,
+                      height: 28,
+                      background: `linear-gradient(135deg, ${theme.palette.primary.light}, ${theme.palette.secondary.main})`,
+                    }}
+                  >
+                    <AutoAwesome sx={{ fontSize: 16, color: "#fff" }} />
+                  </Avatar>
+                  <Typography variant="caption" sx={{ color: "text.secondary", fontWeight: 700, letterSpacing: 0.2 }}>
+                    常用功能
+                  </Typography>
+                  <IconButton
+                    size="small"
+                    onClick={() => setIsPresetPanelOpen((prev) => !prev)}
+                    aria-label={isPresetPanelOpen ? "收起常用功能" : "展开常用功能"}
+                    sx={{ color: "text.secondary" }}
+                  >
+                    {isPresetPanelOpen ? <KeyboardArrowDownRounded /> : <KeyboardArrowUpRounded />}
+                  </IconButton>
+                </Stack>
+              </Paper>
+              </motion.div>
+            </Box>
+          </Box>
+
           <motion.div
             initial={{ y: 20, opacity: 0 }}
             animate={{ y: 0, opacity: 1 }}