diff --git a/controller/api/collector_blueprint.py b/controller/api/collector_blueprint.py
index 2a31267..e794229 100644
--- a/controller/api/collector_blueprint.py
+++ b/controller/api/collector_blueprint.py
@@ -16,8 +16,8 @@ def _get_disk_info(path):
         return {
             'exist': True,
             'percent': disk_info.percent,
-            'free': disk_info.free / (1024 ** 2),
-            'total': disk_info.total / (1024 ** 2)
+            'free': _better_size_unit(disk_info.free),
+            'total': _better_size_unit(disk_info.total)
         }
     else:
         return {
@@ -27,6 +27,27 @@ def _get_disk_info(path):
             'total': 0
         }
 
+
+def _better_size_unit(bytes: int) -> str:
+    if bytes > 8*1024:
+        kbytes = bytes / 1024
+        if kbytes > 8*1024:
+            mbytes = kbytes / 1024
+            if mbytes > 4*1024:
+                gbytes = mbytes / 1024
+                if gbytes > 4*1024:
+                    tbytes = gbytes / 1024
+                    return "{:.2f}TB".format(tbytes)
+                else:
+                    return "{:.2f}GB".format(gbytes)
+            else:
+                return "{:.2f}MB".format(mbytes)
+        else:
+            return "{:.1f}KB".format(kbytes)
+    else:
+        return "{}B".format(bytes)
+
+
 @blueprint.get("/")
 def collect_basic_status():
     return jsonify({
diff --git a/requirements.txt b/requirements.txt
index 817f56d..56061a0 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -17,3 +17,4 @@ SQLAlchemy==1.4.35
 Werkzeug==2.1.1
 wheel==0.37.1
 zipp==3.8.0
+psutil==5.9.0
\ No newline at end of file
diff --git a/templates/index.html b/templates/index.html
index abee353..d1d5eb3 100644
--- a/templates/index.html
+++ b/templates/index.html
@@ -128,7 +128,7 @@
         </tr>
         <tr>
             <td>使用率 {{ collector.basic.disk.bili.percent }}%</td>
-            <td :class="{warning: !collector.basic.disk.bili.exist}">{{ collector.basic.disk.bili.free }}M / {{ collector.basic.disk.bili.total }}M</td>
+            <td :class="{warning: !collector.basic.disk.bili.exist}">{{ collector.basic.disk.bili.free }} / {{ collector.basic.disk.bili.total }}</td>
         </tr>
         <tr>
             <td>西瓜视频录播目录</td>
@@ -136,7 +136,7 @@
         </tr>
         <tr>
             <td>使用率 {{ collector.basic.disk.bili.percent }}%</td>
-            <td :class="{warning: !collector.basic.disk.xigua.exist}">{{ collector.basic.disk.xigua.free }}M / {{ collector.basic.disk.xigua.total }}M</td>
+            <td :class="{warning: !collector.basic.disk.xigua.exist}">{{ collector.basic.disk.xigua.free }} / {{ collector.basic.disk.xigua.total }}</td>
         </tr>
         </tbody>
     </table>
@@ -161,14 +161,14 @@
                             bili: {
                                 exist: false,
                                 percent: 0,
-                                free: 0,
-                                total: 0
+                                free: "",
+                                total: ""
                             },
                             xigua: {
                                 exist: false,
                                 percent: 0,
-                                free: 0,
-                                total: 0
+                                free: "",
+                                total: ""
                             }
                         }
                     },