diff --git a/src/components/model/CreoModelViewer.vue b/src/components/model/CreoModelViewer.vue
index 409e218..c653f66 100644
--- a/src/components/model/CreoModelViewer.vue
+++ b/src/components/model/CreoModelViewer.vue
@@ -38,7 +38,7 @@
           <div class="stats-grid">
             <div class="stat-item">
               <label>零件数量:</label>
-              <span>{{ modelData.data?.partCount || 0 }}个</span>
+              <span>{{ Math.max(0, (modelData.data?.partCount || 0) - 1) }}个</span>
             </div>
             <div class="stat-item">
               <label>装配层级:</label>
diff --git a/src/services/creoApi.js b/src/services/creoApi.js
index 34926b7..0e43788 100644
--- a/src/services/creoApi.js
+++ b/src/services/creoApi.js
@@ -187,7 +187,7 @@ class CreoApiService {
     }, {
       operationContext: {
         software: 'Creo',
-        operation: `层级删除 - 层级${targetLevel}`
+        operation: `层级删除 - 层级${targetLevel + 1}`
       }
     })
   }