diff --git a/internal/handler/backstage_handler.go b/internal/handler/backstage_handler.go
index 7ff2ded..a05b10f 100644
--- a/internal/handler/backstage_handler.go
+++ b/internal/handler/backstage_handler.go
@@ -1353,8 +1353,11 @@ button.ghost{background:#fff;color:#111;border:1px solid #ccc}
 .grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(160px,1fr));gap:10px;margin-top:14px}
 .cell{background:#fff;border:1px solid #eee;border-radius:8px;overflow:hidden}
 .cell img{width:100%;display:block;aspect-ratio:2/3;object-fit:cover}
-.cell .acts{padding:8px;display:flex;gap:6px}
-.cell .acts button{margin:0;flex:1;padding:7px;font-size:13px}
+.cell .acts{padding:8px;display:flex;flex-wrap:wrap;gap:6px}
+.cell .acts button{margin:0;flex:1 1 auto;padding:7px;font-size:13px}
+.btn{display:inline-block;flex:1 1 auto;margin:0;padding:7px 10px;background:#fff;color:#111;border:1px solid #ccc;border-radius:6px;text-decoration:none;font-size:13px;text-align:center}
+.chk{display:flex;align-items:center;gap:4px;flex:1 1 auto;font-size:12px;color:#333;white-space:nowrap;cursor:pointer}
+.chk input{margin:0}
 </style></head>
 <body>
 <div class="bar"><span>管理后台 · 草稿审核 #{{.Draft.ID}}</span><span><a href="{{reviewDetailURL .Draft.Kind .Draft.ID}}">返回列表</a> · <a href="/admin/logout">退出</a></span></div>
@@ -1364,14 +1367,13 @@ button.ghost{background:#fff;color:#111;border:1px solid #ccc}
 {{range .Draft.Fields}}<div><label>{{.Label}}</label>{{if eq .Type "textarea"}}<textarea name="{{.Name}}">{{.Value}}</textarea>{{else}}<input name="{{.Name}}" value="{{.Value}}"{{if eq .Type "number"}} inputmode="numeric"{{end}}>{{end}}</div>{{end}}
 <button type="submit">通过并发布</button>
 </form>
-{{if eq .Draft.Kind "street"}}{{if .Draft.MainID}}<div class="hint">当前主图：#{{.Draft.MainID}}（折叠视图；点「拆出」可恢复独立主图）</div>{{end}}
+{{if eq .Draft.Kind "street"}}<div class="hint">{{if .Draft.MainID}}当前主图：<b>#{{.Draft.MainID}}</b>。操作三步：① 在下方任意「主图」上点「设为主图」切换当前主图 → ② 勾选要并入的图 → ③ 点页面底部「并入到当前主图」。连拍快速归并可用每张图上的「并入上一张」。{{else}}尚未选定主图：请在下方某张图上点「设为主图」（页面会带上 <code>?main=</code> 参数），再勾选要并入的图、点底部「并入到当前主图」。{{end}}</div>
 <h2>主副图分组（{{len .Draft.Groups}} 组 · 共 {{.Draft.ImageCount}} 张）</h2>
 {{if .Draft.Groups}}{{range .Draft.Groups}}<div class="strip-group{{if eq .Image.ID $.Draft.MainID}} cur{{end}}">
 <div class="main-img">
 <img src="{{.Image.Image}}" loading="lazy">
 <div class="acts">
-<form method="post" class="inline" action="{{reviewDetailURL $.Draft.Kind $.Draft.ID}}"><input type="hidden" name="main" value="{{.Image.ID}}"><button type="submit" class="ghost">设为主图</button></form>
-<form method="post" class="inline" action="/admin/reviews/{{$.Draft.Kind}}/{{$.Draft.ID}}/images/{{.Image.ID}}/detach"><button type="submit" onclick="return confirm('确认把这张主图拆成独立主图？')">拆出</button></form>
+<a class="btn" href="{{reviewDetailURL $.Draft.Kind $.Draft.ID .Image.ID}}">设为主图</a>
 <form method="post" class="inline" action="/admin/reviews/{{$.Draft.Kind}}/{{$.Draft.ID}}/images/{{.Image.ID}}/delete"><button type="submit" class="reject" onclick="return confirm('确认删除这张图片？')">删除</button></form>
 </div>
 </div>
@@ -1387,22 +1389,27 @@ button.ghost{background:#fff;color:#111;border:1px solid #ccc}
 </div>{{end}}
 </div>{{end}}
 </div>{{end}}{{else}}<p class="muted">该草稿暂无图片。</p>{{end}}
-<h2>全部图片（点选并入当前主图）</h2>
+<h2>全部图片（勾选后批量并入当前主图）</h2>
+<form id="batch" method="post" action="/admin/reviews/{{.Draft.Kind}}/{{.Draft.ID}}/images/attach">
+<input type="hidden" name="main" value="{{.Draft.MainID}}">
+</form>
 <div class="grid">
 {{range .Draft.Images}}<div class="cell">
 <img src="{{.Image}}" loading="lazy">
-<span style="display:block;padding:6px 8px;font-size:12px;color:#666">{{.Name}}{{if eq .IsDetail 1}} · 副图{{end}}</span>
+<span style="display:block;padding:6px 8px;font-size:12px;color:#666">{{.Name}}{{if eq .IsDetail 1}} · 副图 #{{.ParentImageID}}{{else if eq .ID $.Draft.MainID}} · <b>当前主图</b>{{end}}</span>
 <div class="acts">
 {{if eq .IsDetail 1}}
-<form method="post" action="/admin/reviews/{{$.Draft.Kind}}/{{$.Draft.ID}}/images/{{.ID}}/detach"><button type="submit" onclick="return confirm('把这张拆成独立主图？')">拆出</button></form>
-<form method="post" action="/admin/reviews/{{$.Draft.Kind}}/{{$.Draft.ID}}/images/{{.ID}}/delete"><button type="submit" class="reject" onclick="return confirm('确认删除这张图片？')">删除</button></form>
+<label class="chk"><input type="checkbox" form="batch" name="img" value="{{.ID}}"> 并入</label>
+<form method="post" action="/admin/reviews/{{$.Draft.Kind}}/{{$.Draft.ID}}/images/{{.ID}}/detach"><button type="submit">拆出</button></form>
 {{else}}
-<form method="post" action="/admin/reviews/{{$.Draft.Kind}}/{{$.Draft.ID}}/images/attach"><input type="hidden" name="main" value="{{$.Draft.MainID}}"><input type="hidden" name="img" value="{{.ID}}"><button type="submit"{{if eq .ID $.Draft.MainID}} disabled{{end}}>并入当前主图</button></form>
-<form method="post" action="/admin/reviews/{{$.Draft.Kind}}/{{$.Draft.ID}}/images/{{.ID}}/delete"><button type="submit" class="reject" onclick="return confirm('确认删除这张图片？')">删除</button></form>
+<a class="btn" href="{{reviewDetailURL $.Draft.Kind $.Draft.ID .ID}}">设为主图</a>
+<label class="chk"><input type="checkbox" form="batch" name="img" value="{{.ID}}"{{if eq .ID $.Draft.MainID}} disabled checked{{end}}> 并入</label>
 {{end}}
+<form method="post" action="/admin/reviews/{{$.Draft.Kind}}/{{$.Draft.ID}}/images/{{.ID}}/delete"><button type="submit" class="reject" onclick="return confirm('确认删除这张图片？')">删除</button></form>
 </div>
 </div>{{end}}
 </div>
+<div style="margin-top:12px"><button type="submit" form="batch"{{if not .Draft.MainID}} disabled{{end}}>并入到当前主图{{if .Draft.MainID}} #{{.Draft.MainID}}{{end}}</button></div>
 {{else}}
 <h2>图片管理（{{len .Draft.Images}} 张）</h2>
 <div class="grid">
diff --git a/internal/router/backstage_test.go b/internal/router/backstage_test.go
index 9d4e18d..f365ced 100644
--- a/internal/router/backstage_test.go
+++ b/internal/router/backstage_test.go
@@ -452,4 +452,16 @@ func TestBackstageStreetRenderGroups(t *testing.T) {
 	if !strings.Contains(body, "detail-a") {
 		t.Fatalf("应渲染副图 detail-a")
 	}
+	// 「设为主图」必须是带 ?main= 的 GET 链接：选主图只改 URL，不写库。
+	// （曾被误写成 POST 到 /admin/reviews/street/7，而该路由只有 GET，导致 404、主图根本选不了。）
+	if !strings.Contains(body, `href="/admin/reviews/street/7?main=1"`) {
+		t.Fatalf("「设为主图」应是带 ?main= 的 GET 链接")
+	}
+	if strings.Contains(body, `action="/admin/reviews/street/7"`) {
+		t.Fatalf("不应存在 POST 到详情页的表单（该路由只有 GET）")
+	}
+	// 批量并入：勾选框 + 独立提交按钮，用 form="batch" 关联（零 JS、不嵌套表单）。
+	if !strings.Contains(body, `id="batch"`) || !strings.Contains(body, `form="batch"`) {
+		t.Fatalf("应有勾选批量并入当前主图的表单")
+	}
 }
