diff --git a/client/src/lib/aiApi.ts b/client/src/lib/aiApi.ts
index 9f7d77f..38777b4 100644
--- a/client/src/lib/aiApi.ts
+++ b/client/src/lib/aiApi.ts
@@ -7,6 +7,8 @@ import {
   LuxsinAPI,
   PeqFilter,
   FILTER_TYPE_LABELS,
+  dbToVolume,
+  volumeToDb,
 } from "./luxsinApi";
 
 // Allow override via Vite env / localStorage; default to same origin in prod.
@@ -238,12 +240,28 @@ export async function executeFrontendTool(
     switch (block.name) {
       case "get_device_settings": {
         const state = await api.getDeviceState();
-        return { ok: true, content: state };
+        // 设备的 volume 是 0-200 的原始值，AI 侧以 dB (-100 ~ 0) 看更直观
+        const content: Record<string, any> = { ...state };
+        if (typeof state.volume === "number") {
+          content.volume = Number(volumeToDb(state.volume).toFixed(1));
+          content.volume_unit = "dB";
+        }
+        return { ok: true, content };
       }
       case "set_device_settings": {
-        const params = (block.input ?? {}) as Record<string, string | number>;
+        const rawParams = (block.input ?? {}) as Record<string, string | number>;
+        // AI 传进来的 volume 是 dB，需换算回设备 0-200 的原始值
+        const params: Record<string, string | number> = { ...rawParams };
+        if (params.volume !== undefined && params.volume !== null) {
+          const db = Number(params.volume);
+          if (Number.isFinite(db)) {
+            const clampedDb = Math.max(-100, Math.min(0, db));
+            params.volume = dbToVolume(clampedDb);
+          }
+        }
         await api.setSetting(params);
-        return { ok: true, content: { ok: true, updated: params } };
+        // 回传给 AI 的仍以人类可读的 dB 展示
+        return { ok: true, content: { ok: true, updated: rawParams } };
       }
       case "get_peq_list": {
         const peqState = await api.getPeqState();