diff --git a/package.v2.json b/package.v2.json
index 354f18e..b48a851 100644
--- a/package.v2.json
+++ b/package.v2.json
@@ -3,11 +3,12 @@
     "name": "站点数据统计",
     "description": "站点统计数据图表。",
     "labels": "站点,仪表板",
-    "version": "1.7.1",
+    "version": "1.7.2",
     "icon": "statistic.png",
     "author": "lightolly,jxxghp",
     "level": 2,
     "history": {
+      "v1.7.2": "修复站点数据增量处理逻辑",
       "v1.7.1": "优化内存占用",
       "v1.6": "优化了站点数据获取失败时的回退逻辑",
       "v1.5": "修复了发送增量通知失败等一些问题",
diff --git a/plugins.v2/sitestatistic/__init__.py b/plugins.v2/sitestatistic/__init__.py
index 93f4aef..ea42b09 100644
--- a/plugins.v2/sitestatistic/__init__.py
+++ b/plugins.v2/sitestatistic/__init__.py
@@ -32,7 +32,7 @@ class SiteStatistic(_PluginBase):
     # 插件图标
     plugin_icon = "statistic.png"
     # 插件版本
-    plugin_version = "1.7.1"
+    plugin_version = "1.7.2"
     # 插件作者
     plugin_author = "lightolly,jxxghp"
     # 作者主页
@@ -229,9 +229,17 @@ class SiteStatistic(_PluginBase):
             download = int(today_data_dict[site].download or 0)
             updated_date = today_data_dict[site].updated_day
 
-            if self._notify_type == "inc" and yesterday_data_dict.get(site):
-                upload -= int(yesterday_data_dict[site].upload or 0)
-                download -= int(yesterday_data_dict[site].download or 0)
+            if self._notify_type == "inc":
+                # 增量数据模式：只有当有昨天数据时才计算增量
+                if yesterday_data_dict.get(site):
+                    upload -= int(yesterday_data_dict[site].upload or 0)
+                    download -= int(yesterday_data_dict[site].download or 0)
+                    # 确保增量不为负数
+                    upload = max(0, upload)
+                    download = max(0, download)
+                else:
+                    # 没有昨天数据时，跳过该站点
+                    continue
 
             if updated_date and updated_date != today_date:
                 updated_date = f"（{updated_date}）"
@@ -354,7 +362,8 @@ class SiteStatistic(_PluginBase):
             if not d1:
                 return {}
             if not d2:
-                return d1
+                # 如果没有昨天数据，返回空字典，表示无增量数据
+                return {}
             d = {k: __to_numeric(d1.get(k)) - __to_numeric(d2.get(k)) for k in d1
                  if k in d2 and __is_digit(d1.get(k)) and __is_digit(d2.get(k))}
             # 把小于0的数据变成0
@@ -658,14 +667,15 @@ class SiteStatistic(_PluginBase):
             # 计算增量数据集
             inc_data = {}
             for data in stattistic_data:
-                yesterday_datas = [yd for yd in yesterday_sites_data if yd.domain == data.domain]
+                # 修复：使用name进行匹配，保持一致性
+                yesterday_datas = [yd for yd in yesterday_sites_data if yd.name == data.name]
                 if yesterday_datas:
                     yesterday_data = yesterday_datas[0]
-                else:
-                    yesterday_data = None
-                inc = __sub_data(data.to_dict(), yesterday_data.to_dict() if yesterday_data else None)
-                if inc:
-                    inc_data[data.name] = inc
+                    # 只有当有昨天数据时才计算增量
+                    inc = __sub_data(data.to_dict(), yesterday_data.to_dict())
+                    if inc:
+                        inc_data[data.name] = inc
+                # 如果没有昨天数据，不添加到inc_data中
             # 今日上传
             uploads = {k: v for k, v in inc_data.items() if v.get("upload") if v.get("upload") > 0}
             # 今日上传站点