diff --git a/sundynix-desktop/frontend/src/App.tsx b/sundynix-desktop/frontend/src/App.tsx
index 15353d0..9869748 100644
--- a/sundynix-desktop/frontend/src/App.tsx
+++ b/sundynix-desktop/frontend/src/App.tsx
@@ -9,6 +9,7 @@ import { MemoryView } from "./views/MemoryView";
 import { KbView } from "./views/KbView";
 import { ReportView } from "./views/ReportView";
 import { RunsView } from "./views/RunsView";
+import { UsageView } from "./views/UsageView";
 import { Home } from "./views/Home";
 import { Placeholder } from "./views/Placeholder";
 import { CommandPalette, type Command } from "./components/CommandPalette";
@@ -238,7 +239,7 @@ export default function App() {
         style={{ background: "radial-gradient(60% 100% at 50% 0%, rgba(124,92,246,0.10), transparent 70%)" }}
       />
       <UpdateBanner />
-      <TopBar user={user} tenant={tenant} onLogout={onLogout} onCommand={() => setCmdOpen(true)} />
+      <TopBar user={user} tenant={tenant} onLogout={onLogout} onCommand={() => setCmdOpen(true)} onOpenUsage={() => setView("usage")} />
       <ApprovalBar run={run} />
       <div className="relative flex min-h-0 flex-1">
         <LeftNav active={view} onSelect={setView} />
@@ -255,6 +256,8 @@ export default function App() {
             <RunsView run={run} />
           ) : view === "memory" ? (
             <MemoryView identity={identity} />
+          ) : view === "usage" ? (
+            <UsageView />
           ) : (
             <Placeholder {...(PLACEHOLDERS[view] ?? { title: "模块", desc: "规划中。" })} />
           )}
diff --git a/sundynix-desktop/frontend/src/lib/api.ts b/sundynix-desktop/frontend/src/lib/api.ts
index ffaf16f..2d8b47b 100644
--- a/sundynix-desktop/frontend/src/lib/api.ts
+++ b/sundynix-desktop/frontend/src/lib/api.ts
@@ -139,6 +139,48 @@ export async function tenantCurrent(): Promise<TenantCtx | null> {
   };
 }
 
+// ---- 我的用量明细（当前用户自己租户：余额 + 按天趋势 + 最近消耗）----
+export interface UsageDay {
+  day: string; // YYYYMMDD
+  total_tok: number;
+  credits_micro: number;
+  cost_micros: number;
+  task_count: number;
+}
+export interface UsageRecent {
+  task_id: string;
+  model: string;
+  total_tok: number;
+  credits_micro: number;
+  cost_micros: number;
+  currency: string;
+  ts: number;
+}
+export interface MyUsage {
+  from: string;
+  to: string;
+  balance_micro: number;
+  credit_enforce: boolean;
+  trend: UsageDay[];
+  totals: { total_tok: number; credits_micro: number; cost_micros: number; task_count: number };
+  recent: UsageRecent[];
+}
+
+export async function myUsage(days = 30): Promise<MyUsage> {
+  const res = guard401(await fetch(`${GATEWAY}/api/v1/me/usage?days=${days}`, { headers: bearer() }));
+  if (!res.ok) throw new Error(`usage failed: ${res.status}`);
+  const d = (await res.json()) as Partial<MyUsage>;
+  return {
+    from: d.from ?? "",
+    to: d.to ?? "",
+    balance_micro: d.balance_micro ?? 0,
+    credit_enforce: !!d.credit_enforce,
+    trend: d.trend ?? [],
+    totals: d.totals ?? { total_tok: 0, credits_micro: 0, cost_micros: 0, task_count: 0 },
+    recent: d.recent ?? [],
+  };
+}
+
 // taskStatus: GET /api/v1/tasks/:id —— 任务生命周期状态（submitted/running/waiting/done/failed/timeout/rejected）。
 // 轮询它来可靠捕获 waiting（审批中断）—— 不依赖易抢跑的实时 exec 事件。
 export async function taskStatus(taskId: string): Promise<{ status: string; detail: string }> {
diff --git a/sundynix-desktop/frontend/src/shell/LeftNav.tsx b/sundynix-desktop/frontend/src/shell/LeftNav.tsx
index 98beac8..943aed1 100644
--- a/sundynix-desktop/frontend/src/shell/LeftNav.tsx
+++ b/sundynix-desktop/frontend/src/shell/LeftNav.tsx
@@ -7,11 +7,12 @@ import {
   Bookmark,
   Boxes,
   Settings,
+  Coins,
   type LucideIcon,
 } from "lucide-react";
 import { cn } from "../ui";
 
-export type ViewKey = "home" | "studio" | "kb" | "report" | "runs" | "memory" | "market" | "admin";
+export type ViewKey = "home" | "studio" | "kb" | "report" | "runs" | "memory" | "usage" | "market" | "admin";
 
 interface Item {
   key: ViewKey;
@@ -28,6 +29,7 @@ const ITEMS: Item[] = [
   { key: "report", label: "报告", icon: FileText, group: "BUILD", ready: true },
   { key: "runs", label: "运行", icon: Activity, group: "RUN", ready: true },
   { key: "memory", label: "记忆", icon: Bookmark, group: "MANAGE", ready: true },
+  { key: "usage", label: "用量", icon: Coins, group: "MANAGE", ready: true },
   { key: "market", label: "市场", icon: Boxes, group: "MANAGE" },
   { key: "admin", label: "管理", icon: Settings, group: "MANAGE" },
 ];
diff --git a/sundynix-desktop/frontend/src/shell/TopBar.tsx b/sundynix-desktop/frontend/src/shell/TopBar.tsx
index 946efa2..3bfafb0 100644
--- a/sundynix-desktop/frontend/src/shell/TopBar.tsx
+++ b/sundynix-desktop/frontend/src/shell/TopBar.tsx
@@ -20,16 +20,17 @@ function Light({ on, label }: { on: boolean; label: string }) {
   );
 }
 
-// 积分余额芯片：让用户在主产品里随时看到自己租户剩多少积分。
+// 积分余额芯片：让用户在主产品里随时看到自己租户剩多少积分。点击进「用量」页。
 // 硬拦截开启且余额≤0 → 红色「余额不足」；偏低 → 橙；否则常态。
-function CreditChip({ tenant }: { tenant: TenantCtx }) {
+function CreditChip({ tenant, onClick }: { tenant: TenantCtx; onClick?: () => void }) {
   const credits = tenant.credit_balance_micro / 1_000_000;
   const empty = tenant.credit_enforce && credits <= 0;
   const low = !empty && credits > 0 && credits < 10;
   const tone = empty ? "border-danger/50 text-danger" : low ? "border-warn/50 text-warn" : "border-line text-slate-300";
   return (
-    <span
-      className={cn("flex items-center gap-1.5 rounded-md border bg-ink-800 px-2.5 py-1 text-xs", tone)}
+    <button
+      onClick={onClick}
+      className={cn("flex items-center gap-1.5 rounded-md border bg-ink-800 px-2.5 py-1 text-xs transition hover:border-ink-600", tone)}
       title={
         `租户 ${tenant.tenant?.name ?? ""} · 积分余额 ${credits.toLocaleString("zh-CN", { maximumFractionDigits: 2 })}` +
         (tenant.credit_enforce ? "（余额≤0 将无法提交任务，请联系管理员充值）" : "（当前不拦截，仅计量）")
@@ -37,12 +38,12 @@ function CreditChip({ tenant }: { tenant: TenantCtx }) {
     >
       <Coins className="h-3.5 w-3.5 opacity-70" />
       {empty ? "余额不足" : credits.toLocaleString("zh-CN", { maximumFractionDigits: credits < 100 ? 1 : 0 })}
-    </span>
+    </button>
   );
 }
 
 // 顶栏：品牌 · 垂直切换 · 健康灯 · 积分余额 · 登录用户 + 登出（深色 + 毛玻璃）。
-export function TopBar({ user, tenant, onLogout, onCommand }: { user: AuthUser; tenant?: TenantCtx | null; onLogout: () => void; onCommand?: () => void }) {
+export function TopBar({ user, tenant, onLogout, onCommand, onOpenUsage }: { user: AuthUser; tenant?: TenantCtx | null; onLogout: () => void; onCommand?: () => void; onOpenUsage?: () => void }) {
   const h = useHealth();
   const { theme, toggle } = useTheme();
   return (
@@ -85,7 +86,7 @@ export function TopBar({ user, tenant, onLogout, onCommand }: { user: AuthUser;
         <Light on={h.neo4j} label="Neo4j" />
       </div>
       <div className="ml-auto flex items-center gap-2" style={NODRAG}>
-        {tenant?.tenant && <CreditChip tenant={tenant} />}
+        {tenant?.tenant && <CreditChip tenant={tenant} onClick={onOpenUsage} />}
         <button
           onClick={toggle}
           className="flex items-center rounded-md border border-line bg-ink-800 px-2 py-1 text-slate-400 transition hover:border-ink-600 hover:text-slate-200"
diff --git a/sundynix-desktop/frontend/src/views/UsageView.tsx b/sundynix-desktop/frontend/src/views/UsageView.tsx
new file mode 100644
index 0000000..0278ac0
--- /dev/null
+++ b/sundynix-desktop/frontend/src/views/UsageView.tsx
@@ -0,0 +1,184 @@
+import { useEffect, useMemo, useState } from "react";
+import { Coins, RefreshCw, Wallet, Cpu, Receipt, Activity } from "lucide-react";
+import { myUsage, type MyUsage, type UsageDay } from "../lib/api";
+import { Card, Panel, EmptyState, cn } from "../ui";
+
+// 桌面端「用量」= 用户自己租户的计量观测：积分余额 + 消耗趋势 + 最近消耗。
+// 数据来自 /api/v1/me/usage（面向用户口径，只看自己租户）。积分/金额为微单位（÷1e6）。
+
+const MICRO = 1_000_000;
+const credits = (m: number) => (m / MICRO).toLocaleString("zh-CN", { maximumFractionDigits: 2 });
+const money = (m: number) => (m / MICRO).toLocaleString("zh-CN", { minimumFractionDigits: 2, maximumFractionDigits: 2 });
+const int = (n: number) => n.toLocaleString("zh-CN");
+const mmdd = (s: string) => `${s.slice(4, 6)}-${s.slice(6, 8)}`;
+
+function ymd(d: Date): string {
+  return `${d.getFullYear()}${String(d.getMonth() + 1).padStart(2, "0")}${String(d.getDate()).padStart(2, "0")}`;
+}
+function fillDays(trend: UsageDay[], days: number): UsageDay[] {
+  const by = new Map(trend.map((d) => [d.day, d]));
+  const out: UsageDay[] = [];
+  const now = new Date();
+  for (let i = days - 1; i >= 0; i--) {
+    const d = new Date(now);
+    d.setDate(now.getDate() - i);
+    const key = ymd(d);
+    out.push(by.get(key) ?? { day: key, total_tok: 0, credits_micro: 0, cost_micros: 0, task_count: 0 });
+  }
+  return out;
+}
+
+export function UsageView() {
+  const [days, setDays] = useState(30);
+  const [data, setData] = useState<MyUsage | null>(null);
+  const [loading, setLoading] = useState(true);
+  const [refreshing, setRefreshing] = useState(false);
+  const [err, setErr] = useState("");
+
+  const load = async () => {
+    setRefreshing(true);
+    try {
+      setData(await myUsage(days));
+      setErr("");
+    } catch (e) {
+      setErr((e as Error).message);
+    } finally {
+      setLoading(false);
+      setRefreshing(false);
+    }
+  };
+  useEffect(() => {
+    void load();
+    // eslint-disable-next-line react-hooks/exhaustive-deps
+  }, [days]);
+
+  const series = useMemo(() => (data ? fillDays(data.trend, days) : []), [data, days]);
+
+  if (loading) return <div className="p-6 text-sm text-slate-500">加载用量中…</div>;
+  if (err) return <div className="p-6 text-sm text-danger">用量加载失败：{err}</div>;
+  if (!data) return null;
+
+  const bal = data.balance_micro / MICRO;
+  const empty = data.credit_enforce && bal <= 0;
+  const low = !empty && bal > 0 && bal < 10;
+  const t = data.totals;
+
+  return (
+    <div className="flex h-full flex-col gap-4 overflow-y-auto p-5">
+      {/* 顶栏 */}
+      <div className="flex items-center justify-between">
+        <div>
+          <h2 className="text-lg font-semibold text-slate-100">用量 & 计费</h2>
+          <p className="text-xs text-slate-500">
+            {mmdd(data.from)} ~ {mmdd(data.to)} · 我的租户口径
+          </p>
+        </div>
+        <div className="flex items-center gap-2">
+          <div className="flex overflow-hidden rounded-md border border-line text-xs">
+            {[7, 30].map((d) => (
+              <button
+                key={d}
+                onClick={() => setDays(d)}
+                className={cn("px-3 py-1.5", days === d ? "bg-brand text-white" : "bg-ink-850 text-slate-400 hover:text-slate-200")}
+              >
+                近 {d} 天
+              </button>
+            ))}
+          </div>
+          <button
+            onClick={() => void load()}
+            disabled={refreshing}
+            className="flex items-center gap-1 rounded-md border border-line bg-ink-850 px-2.5 py-1.5 text-xs text-slate-400 hover:text-slate-200 disabled:opacity-40"
+          >
+            <RefreshCw className={cn("h-3.5 w-3.5", refreshing && "animate-spin")} />
+            刷新
+          </button>
+        </div>
+      </div>
+
+      {/* 余额 hero + KPI */}
+      <div className="grid grid-cols-1 gap-4 lg:grid-cols-4">
+        <Card className={cn("p-4", empty ? "border-danger/40" : low ? "border-warn/40" : "")}>
+          <div className="flex items-center gap-1.5 text-xs text-slate-500">
+            <Wallet className="h-3.5 w-3.5" /> 积分余额
+          </div>
+          <div className={cn("mt-1 text-3xl font-semibold tabular-nums", empty ? "text-danger" : low ? "text-warn" : "text-brand")}>
+            {empty ? "余额不足" : credits(data.balance_micro)}
+          </div>
+          <div className="mt-1 text-[11px] text-slate-500">
+            {data.credit_enforce ? "余额≤0 将无法提交任务" : "当前不拦截，仅计量"}
+          </div>
+        </Card>
+        <Metric icon={Coins} label="积分消耗" value={credits(t.credits_micro)} sub={`区间合计 · ${int(t.task_count)} 次运行`} accent="text-accent" />
+        <Metric icon={Cpu} label="Token 用量" value={int(t.total_tok)} sub="prompt + completion（估算）" accent="text-slate-100" />
+        <Metric icon={Receipt} label="估算成本" value={money(t.cost_micros)} sub="按定价折算（配置币种）" accent="text-slate-100" />
+      </div>
+
+      {/* 消耗趋势 */}
+      <Panel title="积分消耗趋势" icon={Activity} className="min-h-[200px]">
+        <TrendBars series={series} />
+      </Panel>
+
+      {/* 最近消耗 */}
+      <Panel title="最近消耗" icon={Coins} className="min-h-[160px]">
+        {data.recent.length === 0 ? (
+          <EmptyState icon={Coins} title="暂无消耗记录" />
+        ) : (
+          <div className="overflow-x-auto">
+            <table className="w-full text-sm">
+              <thead>
+                <tr className="border-b border-line text-left text-[11px] uppercase tracking-wide text-slate-500">
+                  <th className="py-2 pr-3 font-medium">任务</th>
+                  <th className="pr-3 font-medium">模型</th>
+                  <th className="pr-3 text-right font-medium">Token</th>
+                  <th className="pr-3 text-right font-medium">积分</th>
+                  <th className="text-right font-medium">成本</th>
+                </tr>
+              </thead>
+              <tbody>
+                {data.recent.map((r) => (
+                  <tr key={r.task_id} className="border-b border-line/50 last:border-0">
+                    <td className="py-2 pr-3 font-mono text-xs text-slate-300">{r.task_id}</td>
+                    <td className="pr-3 text-xs text-slate-400">{r.model || "—"}</td>
+                    <td className="pr-3 text-right tabular-nums text-slate-400">{int(r.total_tok)}</td>
+                    <td className="pr-3 text-right tabular-nums text-accent">{credits(r.credits_micro)}</td>
+                    <td className="text-right tabular-nums text-slate-400">{money(r.cost_micros)}</td>
+                  </tr>
+                ))}
+              </tbody>
+            </table>
+          </div>
+        )}
+      </Panel>
+    </div>
+  );
+}
+
+function Metric({ icon: Icon, label, value, sub, accent }: { icon: typeof Coins; label: string; value: string; sub: string; accent: string }) {
+  return (
+    <Card className="p-4">
+      <div className="flex items-center gap-1.5 text-xs text-slate-500">
+        <Icon className="h-3.5 w-3.5" /> {label}
+      </div>
+      <div className={cn("mt-1 text-2xl font-semibold tabular-nums", accent)}>{value}</div>
+      <div className="mt-1 text-[11px] text-slate-500">{sub}</div>
+    </Card>
+  );
+}
+
+function TrendBars({ series }: { series: UsageDay[] }) {
+  const max = Math.max(1, ...series.map((d) => d.credits_micro));
+  if (series.every((d) => d.credits_micro === 0)) return <EmptyState icon={Activity} title="区间内暂无消耗" />;
+  return (
+    <div className="flex h-40 items-end gap-1">
+      {series.map((d) => {
+        const h = (d.credits_micro / max) * 100;
+        return (
+          <div key={d.day} className="group relative flex flex-1 flex-col items-center justify-end" title={`${mmdd(d.day)} · ${credits(d.credits_micro)} 积分 · ${int(d.task_count)} 次`}>
+            <div className="w-full rounded-t bg-brand/70 transition-colors group-hover:bg-brand" style={{ height: `${Math.max(d.credits_micro > 0 ? 4 : 0, h)}%` }} />
+          </div>
+        );
+      })}
+    </div>
+  );
+}