diff --git a/zt-module-base/zt-module-base-server/src/main/java/com/zt/plat/module/base/service/masterdatasync/MasterDataCategorySyncServiceImpl.java b/zt-module-base/zt-module-base-server/src/main/java/com/zt/plat/module/base/service/masterdatasync/MasterDataCategorySyncServiceImpl.java
index 0c0a7e07..96c098b3 100644
--- a/zt-module-base/zt-module-base-server/src/main/java/com/zt/plat/module/base/service/masterdatasync/MasterDataCategorySyncServiceImpl.java
+++ b/zt-module-base/zt-module-base-server/src/main/java/com/zt/plat/module/base/service/masterdatasync/MasterDataCategorySyncServiceImpl.java
@@ -186,23 +186,39 @@ public class MasterDataCategorySyncServiceImpl implements MasterDataCategorySync
     }
 
     private String resolveParentCode(String code) {
-        if (code == null) {
+        String normalized = normalizeCode(code);
+        if (normalized == null) {
             return null;
         }
-        if (code.length() <= 2) {
+        String numericPart = extractNumericPart(normalized);
+        if (StrUtil.isBlank(numericPart) || numericPart.length() <= 2) {
             return null;
         }
-        if (code.length() <= 4) {
-            return code.substring(0, 2);
-        }
-        return code.substring(0, 4);
+        String prefix = normalized.substring(0, normalized.length() - numericPart.length());
+        String parentNumeric = numericPart.substring(0, numericPart.length() - 2);
+        return prefix + parentNumeric;
     }
 
     private long determineLevel(String code) {
-        if (code.length() <= 2) {
+        String normalized = normalizeCode(code);
+        if (normalized == null) {
             return 1L;
         }
-        if (code.length() <= 4) {
+        String numericPart = extractNumericPart(normalized);
+        if (StrUtil.isBlank(numericPart)) {
+            if (normalized.length() <= 2) {
+                return 1L;
+            }
+            if (normalized.length() <= 4) {
+                return 2L;
+            }
+            return 3L;
+        }
+        int len = numericPart.length();
+        if (len <= 2) {
+            return 1L;
+        }
+        if (len <= 4) {
             return 2L;
         }
         return 3L;
@@ -211,4 +227,19 @@ public class MasterDataCategorySyncServiceImpl implements MasterDataCategorySync
     private String normalizeCode(String code) {
         return StrUtil.isBlank(code) ? null : StrUtil.trim(code);
     }
+
+    /**
+     * 提取编码中连续的尾部数字部分，例如 ZT0103 -> 0103，ZT010312 -> 010312
+     */
+    private String extractNumericPart(String code) {
+        if (code == null) {
+            return null;
+        }
+        int idx = code.length();
+        while (idx > 0 && Character.isDigit(code.charAt(idx - 1))) {
+            idx--;
+        }
+        String numeric = code.substring(idx);
+        return StrUtil.isBlank(numeric) ? null : numeric;
+    }
 }