diff --git a/gui/simple.ui b/gui/simple.ui
index a7bdf13..746942e 100644
--- a/gui/simple.ui
+++ b/gui/simple.ui
@@ -6,8 +6,8 @@
    <rect>
     <x>0</x>
     <y>0</y>
-    <width>868</width>
-    <height>630</height>
+    <width>870</width>
+    <height>667</height>
    </rect>
   </property>
   <property name="windowTitle">
@@ -120,7 +120,7 @@
            <number>1000</number>
           </property>
           <property name="value">
-           <number>15</number>
+           <number>17</number>
           </property>
          </widget>
         </item>
@@ -199,8 +199,7 @@
              </font>
             </property>
             <property name="text">
-             <string>请注意: 
-依据不同状况查重过程可能需要耗费数秒至数分钟, 请耐心等待</string>
+             <string>&lt;html&gt;&lt;head/&gt;&lt;body&gt;&lt;p&gt;&lt;span style=&quot; font-size:11pt; color:#ff0000;&quot;&gt;注意：&lt;/span&gt;&lt;span style=&quot; font-size:11pt; color:#000000;&quot;&gt;依据不同状况查重过程可能需要耗费数秒至数分钟，请耐心等待&lt;/span&gt;&lt;/p&gt;&lt;/body&gt;&lt;/html&gt;</string>
             </property>
            </widget>
           </item>
@@ -243,7 +242,7 @@
              <double>0.100000000000000</double>
             </property>
             <property name="value">
-             <double>95.000000000000000</double>
+             <double>98.500000000000000</double>
             </property>
            </widget>
           </item>
@@ -362,7 +361,7 @@
              </font>
             </property>
             <property name="text">
-             <string>注意：初次使用时，请添加至少一个索引图库路径，并更新索引记录</string>
+             <string>&lt;html&gt;&lt;head/&gt;&lt;body&gt;&lt;p&gt;&lt;span style=&quot; font-size:12pt; color:#ff0000;&quot;&gt;注意：&lt;/span&gt;&lt;span style=&quot; font-size:12pt;&quot;&gt;初次使用时，请添加至少一个索引图库路径，并更新索引记录&lt;/span&gt;&lt;/p&gt;&lt;/body&gt;&lt;/html&gt;</string>
             </property>
             <property name="wordWrap">
              <bool>true</bool>
diff --git a/utils.py b/utils.py
index 06a90f1..40b9578 100644
--- a/utils.py
+++ b/utils.py
@@ -63,18 +63,25 @@ def checkout(image_path, exists_index, match_n=5):
     return [(sim[i], exists_index[ids[i]]) for i in range(len(ids))]
 
 
-def get_duplicate(exists_index, threshold, match_n=30):
-    ret_ids = []
+def get_duplicate(exists_index, threshold):
+    matched = set()
     for idx in tqdm(range(len(exists_index)), ascii=True):
-        if idx in ret_ids:
-            continue
+        match_n = 5
         try:
             fv = ir_engine.hnsw_index.get_items([idx])[0]
         except RuntimeError:
             continue
         sim, ids = ir_engine.match(fv, match_n)
+        while sim[-1] > threshold:
+            match_n = round(match_n*1.5)
+            sim, ids = ir_engine.match(fv, match_n)
         for i in range(len(ids)):
-            if (sim[i] > threshold) and (ids[i] != idx) and (not idx in ret_ids):
-                ret_ids.append(ids[i])
-                ret_ids.append(idx)
-                yield (exists_index[idx], exists_index[ids[i]], sim[i])
+            if ids[i] == idx:
+                continue
+            if sim[i] < threshold:
+                continue
+            if ids[i] in matched:
+                continue
+            if not idx in matched:
+                matched.add(idx)
+            yield (exists_index[idx], exists_index[ids[i]], sim[i])