diff --git a/convlab2/dst/dstc9/eval_file.py b/convlab2/dst/dstc9/eval_file.py
index b53b46a2..a89c2e3e 100644
--- a/convlab2/dst/dstc9/eval_file.py
+++ b/convlab2/dst/dstc9/eval_file.py
@@ -4,6 +4,7 @@
 
 import os
 import json
+from copy import deepcopy
 
 from convlab2.dst.dstc9.utils import prepare_data, extract_gt, eval_states, get_subdir
 
@@ -16,21 +17,35 @@ def evaluate(model_dir, subtask, gt):
         if not os.path.exists(filepath):
             continue
         pred = json.load(open(filepath))
-        results[i] = eval_states(gt, pred)
+        results[i] = eval_states(gt, pred, subtask)
 
+    print(json.dumps(results, indent=4))
     json.dump(results, open(os.path.join(model_dir, subdir, 'file-results.json'), 'w'), indent=4, ensure_ascii=False)
 
 
+# generate submission examples
 def dump_example(subtask, split):
     test_data = prepare_data(subtask, split)
-    gt = extract_gt(test_data)
-    json.dump(gt, open(os.path.join('example', get_subdir(subtask), 'submission1.json'), 'w'), ensure_ascii=False, indent=4)
-    for dialog_id, states in gt.items():
+    pred = extract_gt(test_data)
+    json.dump(pred, open(os.path.join('example', get_subdir(subtask), 'submission1.json'), 'w'), ensure_ascii=False, indent=4)
+    import random
+    for dialog_id, states in pred.items():
+        for state in states:
+            for domain in state.values():
+                for slot, value in domain.items():
+                    if value:
+                        if random.randint(0, 2) == 0:
+                            domain[slot] = ""
+                    else:
+                        if random.randint(0, 4) == 0:
+                            domain[slot] = "2333"
+    json.dump(pred, open(os.path.join('example', get_subdir(subtask), 'submission2.json'), 'w'), ensure_ascii=False, indent=4)
+    for dialog_id, states in pred.items():
         for state in states:
             for domain in state.values():
                 for slot in domain:
                     domain[slot] = ""
-    json.dump(gt, open(os.path.join('example', get_subdir(subtask), 'submission2.json'), 'w'), ensure_ascii=False, indent=4)
+    json.dump(pred, open(os.path.join('example', get_subdir(subtask), 'submission3.json'), 'w'), ensure_ascii=False, indent=4)
 
 
 if __name__ == '__main__':
diff --git a/convlab2/dst/dstc9/eval_model.py b/convlab2/dst/dstc9/eval_model.py
index 1b84ea05..377ecdd3 100644
--- a/convlab2/dst/dstc9/eval_model.py
+++ b/convlab2/dst/dstc9/eval_model.py
@@ -22,8 +22,8 @@ def evaluate(model_dir, subtask, test_data, gt):
     for dialog_id, turns in test_data.items():
         model.init_session()
         pred[dialog_id] = [model.update_turn(sys_utt, user_utt) for sys_utt, user_utt, gt_turn in turns]
-    result = eval_states(gt, pred)
-    print(result)
+    result = eval_states(gt, pred, subtask)
+    print(json.dumps(result, indent=4))
     json.dump(result, open(os.path.join(model_dir, subdir, 'model-result.json'), 'w'), indent=4, ensure_ascii=False)
 
 
diff --git a/convlab2/dst/dstc9/utils.py b/convlab2/dst/dstc9/utils.py
index 80cd25d9..b378fd2e 100644
--- a/convlab2/dst/dstc9/utils.py
+++ b/convlab2/dst/dstc9/utils.py
@@ -5,8 +5,13 @@
 from convlab2 import DATA_ROOT
 
 
+def get_subdir(subtask):
+    subdir = 'multiwoz_zh' if subtask == 'multiwoz' else 'crosswoz_en'
+    return subdir
+
+
 def prepare_data(subtask, split, data_root=DATA_ROOT):
-    data_dir = os.path.join(data_root, 'multiwoz_zh' if subtask == 'multiwoz' else 'crosswoz_en')
+    data_dir = os.path.join(data_root, get_subdir(subtask))
     zip_filename = os.path.join(data_dir, f'{split}.json.zip')
     test_data = json.load(zipfile.ZipFile(zip_filename).open(f'{split}.json'))
     data = {}
@@ -57,7 +62,20 @@ def extract_gt(test_data):
     return gt
 
 
-def eval_states(gt, pred):
+def eval_states(gt, pred, subtask):
+    # for unifying values with the same meaning to the same expression
+    value_unifier = {
+        'multiwoz': {
+
+        },
+        'crosswoz': {
+            '未提及': '',
+        }
+    }[subtask]
+
+    def unify_value(value):
+        return value_unifier.get(value, value)
+
     def exception(description, **kargs):
         ret = {
             'status': 'exception',
@@ -89,35 +107,32 @@ def exception(description, **kargs):
                 for slot_name, gt_value in gt_domain.items():
                     if slot_name not in pred_domain:
                         return exception('slot missing', dialog_id=dialog_id, turn_id=turn_id, domain=domain_name, slot=slot_name)
-                    pred_value = pred_domain[slot_name]
+                    gt_value = unify_value(gt_value)
+                    pred_value = unify_value(pred_domain[slot_name])
                     slot_tot += 1
                     if gt_value == pred_value:
                         slot_acc += 1
-                        tp += 1
+                        if gt_value:
+                            tp += 1
                     else:
                         turn_result = False
-                        # for class of gt_value
-                        fn += 1
-                        # for class of pred_value
-                        fp += 1
+                        if gt_value:
+                            fn += 1
+                        if pred_value:
+                            fp += 1
             joint_acc += turn_result
 
-    precision = tp / (tp + fp)
-    recall = tp / (tp + fn)
-    f1 = 2 * tp / (2 * tp + fp + fn)
+    precision = tp / (tp + fp) if tp + fp else 1
+    recall = tp / (tp + fn) if tp + fn else 1
+    f1 = 2 * tp / (2 * tp + fp + fn) if (2 * tp + fp + fn) else 1
     return {
         'status': 'ok',
         'joint accuracy': joint_acc / joint_tot,
-        'slot accuracy': slot_acc / slot_tot,
-        # 'slot': {
-        #     'accuracy': slot_acc / slot_tot,
-        #     'precision': precision,
-        #     'recall': recall,
-        #     'f1': f1,
-        # }
+        # 'slot accuracy': slot_acc / slot_tot,
+        'slot': {
+            'accuracy': slot_acc / slot_tot,
+            'precision': precision,
+            'recall': recall,
+            'f1': f1,
+        }
     }
-
-
-def get_subdir(subtask):
-    subdir = 'multiwoz_zh' if subtask == 'multiwoz' else 'crosswoz_en'
-    return subdir