diff --git a/backend/src/main/java/com/designhub/service/TaskApprovalService.java b/backend/src/main/java/com/designhub/service/TaskApprovalService.java
index 95a5769..27fb5d1 100644
--- a/backend/src/main/java/com/designhub/service/TaskApprovalService.java
+++ b/backend/src/main/java/com/designhub/service/TaskApprovalService.java
@@ -902,15 +902,15 @@ public class TaskApprovalService {
 
     /**
      * 格式化预估工时显示
-     * 将小时数转换为 "X天X小时" 格式
+     * 将小时数转换为 "X天X小时" 格式（8小时=1天）
      */
     private String formatEstimatedHours(java.math.BigDecimal hours) {
         if (hours == null) {
             return "未设置";
         }
         int totalHours = hours.intValue();
-        int days = totalHours / 24;
-        int remainingHours = totalHours % 24;
+        int days = totalHours / 8;
+        int remainingHours = totalHours % 8;
         
         StringBuilder sb = new StringBuilder();
         if (days > 0) {
diff --git a/backend/src/main/java/com/designhub/service/TaskItemService.java b/backend/src/main/java/com/designhub/service/TaskItemService.java
index bf2c53b..dbe1209 100644
--- a/backend/src/main/java/com/designhub/service/TaskItemService.java
+++ b/backend/src/main/java/com/designhub/service/TaskItemService.java
@@ -1347,15 +1347,15 @@ public class TaskItemService {
     }
     
     /**
-     * 格式化工时显示（与TaskApprovalService一致）
+     * 格式化工时显示（与TaskApprovalService一致，8小时=1天）
      */
     private String formatEstimatedHours(java.math.BigDecimal hours) {
         if (hours == null) {
             return "未设置";
         }
         int totalHours = hours.intValue();
-        int days = totalHours / 24;
-        int remainingHours = totalHours % 24;
+        int days = totalHours / 8;
+        int remainingHours = totalHours % 8;
         
         StringBuilder sb = new StringBuilder();
         if (days > 0) {