diff --git a/templates/MetaLab-2026/html/settings/index.html b/templates/MetaLab-2026/html/settings/index.html
index 5913a61..31fb0ff 100644
--- a/templates/MetaLab-2026/html/settings/index.html
+++ b/templates/MetaLab-2026/html/settings/index.html
@@ -595,8 +595,33 @@
                     var res = JSON.parse(xhr.responseText);
                     if (res.success) {
                         showSettingsToast(res.message || '头像已更新');
-                        if (res.data && res.data.url && avatarPreview.tagName === 'IMG') {
-                            avatarPreview.src = res.data.url + '?t=' + Date.now();
+                        var newAvatarUrl = res.data && res.data.url && (res.data.url + '?t=' + Date.now());
+                        if (newAvatarUrl && avatarPreview.tagName === 'IMG') {
+                            avatarPreview.src = newAvatarUrl;
+                        }
+                        // 同步更新 NAV 头像
+                        if (newAvatarUrl) {
+                            var navLink = document.querySelector('.nav-avatar-link');
+                            if (navLink) {
+                                var navImg = navLink.querySelector('img.nav-avatar');
+                                if (navImg) {
+                                    navImg.src = newAvatarUrl;
+                                    navImg.style.display = '';
+                                    var fb = navLink.querySelector('.nav-avatar-default');
+                                    if (fb) fb.style.display = 'none';
+                                } else {
+                                    var fb2 = navLink.querySelector('.nav-avatar-default');
+                                    if (fb2) {
+                                        var img = document.createElement('img');
+                                        img.src = newAvatarUrl;
+                                        img.alt = '';
+                                        img.className = 'nav-avatar';
+                                        img.onerror = function() { this.style.display = 'none'; this.nextElementSibling.style.display = 'flex'; };
+                                        navLink.insertBefore(img, fb2);
+                                        fb2.style.display = 'none';
+                                    }
+                                }
+                            }
                         }
                     } else {
                         showSettingsToast(res.message || '上传失败', true);