diff --git a/main.py b/main.py
index 16b890c..6cde854 100644
--- a/main.py
+++ b/main.py
@@ -273,6 +273,8 @@ def filter_group_mode1(parameter, group, hits):
 def predict():
     mode = request.args.get('mode')
     parameter = request.args.get('parameter')
+    if len(trim_space(parameter)) == 0:
+        return jsonify({'status': 1, 'message': '请输入参数', 'result': []})
     all_idiom, group = filter_logic(mode, parameter)
     result = get_max_group(all_idiom, group, 6)
     return jsonify({'status': 0, 'message': 'success', 'result': result})
diff --git a/templates/index.html b/templates/index.html
index 3aabeca..a3c68d5 100644
--- a/templates/index.html
+++ b/templates/index.html
@@ -7,7 +7,8 @@
     <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
 
     <!-- Bootstrap CSS -->
-    <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css" integrity="sha384-Gn5384xqQ1aoWXA+058RXPxPg6fy4IWvTNh0E263XmFcJlSAwiGgFAW/dAiS6JXm" crossorigin="anonymous">
+    <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css"
+        integrity="sha384-Gn5384xqQ1aoWXA+058RXPxPg6fy4IWvTNh0E263XmFcJlSAwiGgFAW/dAiS6JXm" crossorigin="anonymous">
     <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
 </head>
 
@@ -19,27 +20,27 @@
                 <div class="form-check form-check-inline">
                     <input class="form-check-input" type="radio" name="mode" id="mode0" value="0" checked>
                     <label class="form-check-label" for="mode0">拼音1</label>
-                  </div>
-                  <div class="form-check form-check-inline">
+                </div>
+                <div class="form-check form-check-inline">
                     <input class="form-check-input" type="radio" name="mode" id="mode1" value="1">
                     <label class="form-check-label" for="mode1">拼音2</label>
-                  </div>
-                  <div class="form-check form-check-inline">
+                </div>
+                <div class="form-check form-check-inline">
                     <input class="form-check-input" type="radio" name="mode" id="mode2" value="2">
                     <label class="form-check-label" for="mode2">汉兜1</label>
-                  </div>
-                  <div class="form-check form-check-inline">
+                </div>
+                <div class="form-check form-check-inline">
                     <input class="form-check-input" type="radio" name="mode" id="mode3" value="3">
                     <label class="form-check-label" for="mode3">汉兜2</label>
-                  </div>
-                  <div class="form-check form-check-inline">
+                </div>
+                <div class="form-check form-check-inline">
                     <input class="form-check-input" type="radio" name="mode" id="mode4" value="4">
                     <label class="form-check-label" for="mode4">文字正则</label>
-                  </div>
-                  <div class="form-check form-check-inline">
+                </div>
+                <div class="form-check form-check-inline">
                     <input class="form-check-input" type="radio" name="mode" id="mode5" value="5">
                     <label class="form-check-label" for="mode5">拼音正则</label>
-                  </div>
+                </div>
             </div>
         </div>
         <div class="form-group row">
@@ -63,8 +64,12 @@
     <!-- Optional JavaScript -->
     <!-- jQuery first, then Popper.js, then Bootstrap JS -->
     <script src="https://code.jquery.com/jquery-3.6.0.min.js" crossorigin="anonymous"></script>
-    <script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.12.9/umd/popper.min.js" integrity="sha384-ApNbgh9B+Y1QKtv3Rn7W3mgPxhU9K/ScQsAP7hUibX39j7fakFPskvXusvfa0b4Q" crossorigin="anonymous"></script>
-    <script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/js/bootstrap.min.js" integrity="sha384-JZR6Spejh4U02d8jOt6vLEHfe/JQGiRRSQQxSfFWpi1MquVdAyjUar5+76PVCmYl" crossorigin="anonymous"></script>
+    <script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.12.9/umd/popper.min.js"
+        integrity="sha384-ApNbgh9B+Y1QKtv3Rn7W3mgPxhU9K/ScQsAP7hUibX39j7fakFPskvXusvfa0b4Q"
+        crossorigin="anonymous"></script>
+    <script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/js/bootstrap.min.js"
+        integrity="sha384-JZR6Spejh4U02d8jOt6vLEHfe/JQGiRRSQQxSfFWpi1MquVdAyjUar5+76PVCmYl"
+        crossorigin="anonymous"></script>
     <script>
         $(document).ready(function () {
             $('input[name=mode]').on('click', function (e) {
@@ -91,22 +96,29 @@
                 $("#parameter").val('')
             })
             $('#submit').on('click', function () {
-                $.get('/predict', { mode: $("input[name='mode']:checked").val(), parameter: $('#parameter').val() }, function (result) {
-                    if(result && result.status === 0){
-                        text = result.result.map(function(item){
-                            return item.word + '\t' + item.pinyin
-                        }).join('\n')
-                        if(!text){
-                            $('#result').val('无匹配结果')
+                $.ajax({
+                    url: '/predict',
+                    data: { mode: $("input[name='mode']:checked").val(), parameter: $('#parameter').val() },
+                    success: function (result,) {
+                        if (result && result.status === 0) {
+                            text = result.result.map(function (item) {
+                                return item.word + '\t' + item.pinyin
+                            }).join('\n')
+                            if (!text) {
+                                $('#result').val('无匹配结果')
+                            }
+                            else {
+                                $('#result').val(text)
+                            }
                         }
-                        else{
-                            $('#result').val(text)
+                        else {
+                            $('#result').val(result.message)
                         }
+                    },
+                    error: function(){
+                        $('#result').val('出错了，请检查参数')
                     }
-                    else {
-                        $('#result').val(result)
-                    }
-                })
+                });
             })
         });
     </script>