diff --git a/zt-module-base/zt-module-base-api/src/main/java/com/zt/plat/module/base/enums/ErrorCodeConstants.java b/zt-module-base/zt-module-base-api/src/main/java/com/zt/plat/module/base/enums/ErrorCodeConstants.java
index e019d7d..0113c88 100644
--- a/zt-module-base/zt-module-base-api/src/main/java/com/zt/plat/module/base/enums/ErrorCodeConstants.java
+++ b/zt-module-base/zt-module-base-api/src/main/java/com/zt/plat/module/base/enums/ErrorCodeConstants.java
@@ -12,6 +12,7 @@ public interface ErrorCodeConstants {
     // ========== 示例模块 1-001-000-000 ==========
     ErrorCode MATERIAL_OTHER_NOT_EXISTS = new ErrorCode(1_001_000_001, "物料不存在");
     ErrorCode ELEMENT_NOT_EXISTS = new ErrorCode(1_001_000_001, "金属元素不存在");
+    ErrorCode ELEMENT_EXISTS = new ErrorCode(1_001_000_002, "金属元素已经存在");
     ErrorCode CONTACT_NOT_EXISTS = new ErrorCode(1_001_000_001, "联系人不存在");
     ErrorCode ACCOUNT_NOT_EXISTS = new ErrorCode(1_001_000_001, "账户条款不存在");
     ErrorCode MATERIAL_DESTROY_NOT_EXISTS = new ErrorCode(1_001_000_001, "物料回收率不存在");
diff --git a/zt-module-base/zt-module-base-server/src/main/java/com/zt/plat/module/base/service/base/ElementServiceImpl.java b/zt-module-base/zt-module-base-server/src/main/java/com/zt/plat/module/base/service/base/ElementServiceImpl.java
index 19b1bcc..2a57bb2 100644
--- a/zt-module-base/zt-module-base-server/src/main/java/com/zt/plat/module/base/service/base/ElementServiceImpl.java
+++ b/zt-module-base/zt-module-base-server/src/main/java/com/zt/plat/module/base/service/base/ElementServiceImpl.java
@@ -17,6 +17,7 @@ import org.springframework.validation.annotation.Validated;
 import java.util.List;
 
 import static com.zt.plat.framework.common.exception.util.ServiceExceptionUtil.exception;
+import static com.zt.plat.module.base.enums.ErrorCodeConstants.ELEMENT_EXISTS;
 import static com.zt.plat.module.base.enums.ErrorCodeConstants.ELEMENT_NOT_EXISTS;
 
 /**
@@ -95,8 +96,8 @@ public class ElementServiceImpl implements ElementService {
 
     private void validateElementCodeExists(String code) {
         ElementDO elementDO =  elementMapper.getElementName(code);
-        if (elementDO == null) {
-            throw exception(ELEMENT_NOT_EXISTS);
+        if (elementDO != null) {
+            throw exception(ELEMENT_EXISTS);
         }
     }