diff --git a/yudao-module-mqtt/yudao-module-mqtt-api/src/main/java/cn/iocoder/yudao/module/mqtt/api/path/dto/PositionMapLineDTO.java b/yudao-module-mqtt/yudao-module-mqtt-api/src/main/java/cn/iocoder/yudao/module/mqtt/api/path/dto/PositionMapLineDTO.java
index 56ffffc7b..c1df7f708 100644
--- a/yudao-module-mqtt/yudao-module-mqtt-api/src/main/java/cn/iocoder/yudao/module/mqtt/api/path/dto/PositionMapLineDTO.java
+++ b/yudao-module-mqtt/yudao-module-mqtt-api/src/main/java/cn/iocoder/yudao/module/mqtt/api/path/dto/PositionMapLineDTO.java
@@ -6,6 +6,9 @@ import lombok.Builder;
 import lombok.Data;
 import lombok.NoArgsConstructor;
 
+import java.util.Arrays;
+import java.util.List;
+
 @Data
 @Builder
 @NoArgsConstructor
@@ -109,67 +112,46 @@ public class PositionMapLineDTO {
     private Integer ppToward;
 
 
+    private static final List<Integer> ANTI_LIST = Arrays.asList(1, 3, 6);
+    private static final List<Integer> WHATEVER_LIST = Arrays.asList(4, 7, 8);
+
     /**
      * 双向车道 反向行走变更车头朝向
-     *
+     * <p>
      * 车头朝向(0:正正 1:正反 2:反正 3:反反  4正随 5随正 6随反 7反随 8随随
      *
      * @param toward
      * @return
      */
     public Integer changeToward(Integer toward) {
-        if (toward == 0) {
-            return 0;
-        } else if (toward == 1) {
-            return 1;
-        } else if (toward == 2) {
-            return 0;
-        } else if (toward == 3) {
-            return 1;
-        } else if (toward == 4) {
-            return 2;
-        } else if (toward == 5) {
-            return 0;
-        } else if (toward == 6) {
-            return 1;
-        } else if (toward == 7) {
-            return 2;
-        } else if (toward == 8) {
-            return 2;
-        } else {
-            return 0;
+        int ppToward = 0;
+        if (ANTI_LIST.contains(toward)) {
+            ppToward = 1;
+        } else if (WHATEVER_LIST.contains(toward)) {
+            ppToward = 2;
         }
+        return ppToward;
     }
 
+
+    private static final List<Integer> FIRST_ANTI_LIST = Arrays.asList(2, 3, 7);
+    private static final List<Integer> FIRST_WHATEVER_LIST = Arrays.asList(5, 6, 8);
+
     /**
      * 双向车道 反向行走变更车头朝向
-     *
+     * <p>
      * 车头朝向(0:正正 1:正反 2:反正 3:反反  4正随 5随正 6随反 7反随 8随随
      *
      * @param toward
      * @return
      */
     public Integer changeTowardFirst(Integer toward) {
-        if (toward == 0) {
-            return 0;
-        } else if (toward == 1) {
-            return 0;
-        } else if (toward == 2) {
-            return 1;
-        } else if (toward == 3) {
-            return 1;
-        } else if (toward == 4) {
-            return 0;
-        } else if (toward == 5) {
-            return 2;
-        } else if (toward == 6) {
-            return 2;
-        } else if (toward == 7) {
-            return 1;
-        } else if (toward == 8) {
-            return 2;
-        } else {
-            return 0;
+        int ppToward = 0;
+        if (FIRST_ANTI_LIST.contains(toward)) {
+            ppToward = 1;
+        } else if (FIRST_WHATEVER_LIST.contains(toward)) {
+            ppToward = 2;
         }
+        return ppToward;
     }
 }