diff --git a/web/src/components/accounts/RebindEnvironment.tsx b/web/src/components/accounts/RebindEnvironment.tsx
index 83889cb..c4d0c01 100644
--- a/web/src/components/accounts/RebindEnvironment.tsx
+++ b/web/src/components/accounts/RebindEnvironment.tsx
@@ -74,7 +74,6 @@ export default function RebindEnvironment({ binding, disabled, onRebound, onErro
           placeholder={exitsError ? '出口列表不可用' : '选择目标出口'}
           disabled={disabled || exitsError || busy}
           aria-label="目标网络出口"
-          size="small"
         />
         <Button size="small" type="primary" disabled={disabled || exitsError || unchanged || busy} loading={busy} onClick={rebind}>
           保存网络出口
diff --git a/web/tests/account-network-exit-size.test.cjs b/web/tests/account-network-exit-size.test.cjs
new file mode 100644
index 0000000..5ac2984
--- /dev/null
+++ b/web/tests/account-network-exit-size.test.cjs
@@ -0,0 +1,34 @@
+const assert = require('node:assert/strict');
+const { readFileSync } = require('node:fs');
+const { test } = require('node:test');
+const ts = require('typescript');
+
+function source(path) {
+  return ts.createSourceFile(path, readFileSync(`${__dirname}/../src/${path}`, 'utf8'), ts.ScriptTarget.Latest, true, ts.ScriptKind.TSX);
+}
+function find(ast, predicate) {
+  let result;
+  function visit(node) {
+    if (!result && predicate(node)) result = node;
+    ts.forEachChild(node, visit);
+  }
+  visit(ast);
+  assert.ok(result, '目标控件必须存在');
+  return result;
+}
+function size(element) {
+  return element.attributes.properties.find(prop => prop.name?.getText() === 'size')?.initializer?.getText();
+}
+
+test('网络出口下拉框与业务状态使用同一默认大小，保存按钮保持 small', () => {
+  const edit = source('pages/accounts/$id/edit.tsx');
+  const status = find(edit, node => ts.isJsxElement(node) && node.openingElement.tagName.getText() === 'Form.Item' &&
+    node.openingElement.attributes.properties.some(prop => prop.name?.getText() === 'name' && prop.initializer?.text === 'business_status'));
+  const statusSelect = find(status, node => ts.isJsxSelfClosingElement(node) && node.tagName.getText() === 'Select');
+  const exit = source('components/accounts/RebindEnvironment.tsx');
+  const exitSelect = find(exit, node => ts.isJsxSelfClosingElement(node) && node.tagName.getText() === 'Select');
+  assert.equal(size(statusSelect), undefined);
+  assert.equal(size(exitSelect), size(statusSelect));
+  const save = find(exit, node => ts.isJsxOpeningElement(node) && node.tagName.getText() === 'Button');
+  assert.equal(size(save), '"small"');
+});