diff --git a/lib/client.js b/lib/client.js
index ce2e0f1..1b47205 100644
--- a/lib/client.js
+++ b/lib/client.js
@@ -12,7 +12,7 @@ const { getDashboardInfo, resolveOpenclawConfigFile, startTtyd, FrpcManager } =
 const { ProvisionManager } = require('./provisioning');
 const { BtMonitor }        = require('./bt-monitor');
 const { hasInternet, hasWiredInternetProbe, getLocalIps } = require('./network');
-const { applyFullProviderFromVps, removeProviderByName, isFullProvider } = require('./openclaw-provider');
+const { applyFullProviderFromVps, removeProviderByName, refreshModelsIfChanged, isFullProvider } = require('./openclaw-provider');
 const led = require('./led');
 
 const MAX_BACKOFF_MS      = 60_000;
@@ -469,7 +469,10 @@ class ClawClient {
           this._updateOpenClawOrigin(clawIdStr);
         });
       } else {
-        this._updateOpenClawOrigin(clawIdStr);
+        // 重连场景：检查模型列表是否有变化，有变化才写盘
+        refreshModelsIfChanged(() => {
+          this._updateOpenClawOrigin(clawIdStr);
+        });
       }
     }
   }
diff --git a/lib/openclaw-provider.js b/lib/openclaw-provider.js
index 76b0492..81b65be 100644
--- a/lib/openclaw-provider.js
+++ b/lib/openclaw-provider.js
@@ -4,6 +4,7 @@ const fs = require('fs');
 const path = require('path');
 const http = require('http');
 const https = require('https');
+const crypto = require('crypto');
 const log = require('./logger');
 const { resolveOpenclawConfigFile } = require('./frpc');
 
@@ -246,9 +247,86 @@ function isFullProvider(p) {
     || Object.prototype.hasOwnProperty.call(p, 'baseUrl');
 }
 
+/**
+ * 对模型列表计算 MD5（按 id 排序后 JSON 序列化），用于变更检测。
+ */
+function computeModelsMd5(models) {
+  const ids = (models || []).map((m) => m.id).sort();
+  return crypto.createHash('md5').update(JSON.stringify(ids)).digest('hex');
+}
+
+/**
+ * 重连时刷新模型列表：读取现有 openclaw.json 中第一个 provider 的 baseUrl/apiKey，
+ * 拉取最新模型，MD5 与现有模型对比，不一致才写盘（触发 gateway 自动重启）。
+ * 若模型未变则跳过，不写盘，不触发 gateway 重启。
+ * 完成后调用 onDone()（无论是否更新）。
+ */
+function refreshModelsIfChanged(onDone) {
+  if (_busy) {
+    log.info('openclaw-provider', 'refreshModels: 有操作进行中，跳过');
+    if (typeof onDone === 'function') onDone();
+    return;
+  }
+
+  const configFile = resolveOpenclawConfigFile();
+  if (!configFile) {
+    if (typeof onDone === 'function') onDone();
+    return;
+  }
+
+  let config;
+  try {
+    config = readJsonFile(configFile);
+  } catch (e) {
+    log.warn('openclaw-provider', `refreshModels: 读取配置失败: ${e.message}`);
+    if (typeof onDone === 'function') onDone();
+    return;
+  }
+
+  const providers = config.models?.providers || {};
+  const providerId = Object.keys(providers)[0];
+  if (!providerId) {
+    log.info('openclaw-provider', 'refreshModels: 未找到已配置的 provider，跳过');
+    if (typeof onDone === 'function') onDone();
+    return;
+  }
+
+  const providerCfg = providers[providerId];
+  const baseUrl = providerCfg.baseUrl || '';
+  const apiKey = providerCfg.apiKey || '';
+  const currentModels = providerCfg.models || [];
+
+  _busy = true;
+  fetchModels(baseUrl, apiKey, (err, newModels) => {
+    try {
+      if (err) {
+        log.warn('openclaw-provider', `refreshModels: 拉模型失败: ${err.message}`);
+        return;
+      }
+
+      const currentMd5 = computeModelsMd5(currentModels);
+      const newMd5     = computeModelsMd5(newModels);
+
+      if (currentMd5 === newMd5) {
+        log.info('openclaw-provider', `模型列表未变化（${newModels.length} 个），跳过更新`);
+        return;
+      }
+
+      log.info('openclaw-provider', `模型列表已变化（${currentModels.length} → ${newModels.length} 个），更新 openclaw.json`);
+      addProviderSync(configFile, providerId, baseUrl, apiKey, newModels, null);
+    } catch (e) {
+      log.error('openclaw-provider', `refreshModels: ${e.message}`);
+    } finally {
+      _busy = false;
+      if (typeof onDone === 'function') onDone();
+    }
+  });
+}
+
 module.exports = {
   applyFullProviderFromVps,
   removeProviderByName,
+  refreshModelsIfChanged,
   isFullProvider,
   DEFAULT_BASE_URL,
 };