diff --git a/lms/nladmin-system/src/main/java/org/nl/b_lms/sch/tasks/slitter/util/SlitterTaskUtil.java b/lms/nladmin-system/src/main/java/org/nl/b_lms/sch/tasks/slitter/util/SlitterTaskUtil.java
index 183ac501b..0f046fb7c 100644
--- a/lms/nladmin-system/src/main/java/org/nl/b_lms/sch/tasks/slitter/util/SlitterTaskUtil.java
+++ b/lms/nladmin-system/src/main/java/org/nl/b_lms/sch/tasks/slitter/util/SlitterTaskUtil.java
@@ -78,7 +78,7 @@ public class SlitterTaskUtil {
         // 假设壁厚默认值为15，如果描述数组长度为4，则重新赋值
         String th = tubeArray.length == 5 ? tubeArray[3] : "15";
         if (tubeArray[3].contains("-")) {
-            th = tubeArray[3].split("-")[1];
+            th = tubeArray[3].split("-")[0];
         }
 
         // 计算外径和内径