diff --git a/blade-service/blade-transport/src/main/java/org/springblade/transport/constant/HcsSyncConstant.java b/blade-service/blade-transport/src/main/java/org/springblade/transport/constant/HcsSyncConstant.java
index b546a004..3533f1fb 100644
--- a/blade-service/blade-transport/src/main/java/org/springblade/transport/constant/HcsSyncConstant.java
+++ b/blade-service/blade-transport/src/main/java/org/springblade/transport/constant/HcsSyncConstant.java
@@ -161,14 +161,14 @@ public final class HcsSyncConstant {
 	public static final String CUSTOMER_KIND_INTERNAL = "internal";
 
 	/**
-	 * 合同附件类型字段名（前端约定：附件元数据 attachmentType）
+	 * 合同附件类型字段名（与前端附件元数据 fileType 字段对齐，值取业务字典 contract_attachment_type）
 	 */
-	public static final String ATTACHMENT_TYPE_FIELD = "attachmentType";
+	public static final String ATTACHMENT_TYPE_FIELD = "fileType";
 
 	/**
-	 * 附件类型：特批说明（高风险/黑名单客商合同必须上传）
+	 * 附件类型：特批说明（高风险/黑名单客商合同必须上传；中文匹配沿用 FILE_TYPE_SEAL_ARCHIVE="双章归档文件" 惯例）
 	 */
-	public static final String ATTACHMENT_TYPE_SPEC_EXPLANATION = "spec_explanation";
+	public static final String ATTACHMENT_TYPE_SPEC_EXPLANATION = "特批说明";
 
 	/**
 	 * 特批审核挂起节点展示名（currentNode，特批发起后挂起展示，结果回传后恢复）
diff --git a/blade-service/blade-transport/src/main/java/org/springblade/transport/service/impl/ContractManageServiceImpl.java b/blade-service/blade-transport/src/main/java/org/springblade/transport/service/impl/ContractManageServiceImpl.java
index c3a51bb4..ec25728e 100644
--- a/blade-service/blade-transport/src/main/java/org/springblade/transport/service/impl/ContractManageServiceImpl.java
+++ b/blade-service/blade-transport/src/main/java/org/springblade/transport/service/impl/ContractManageServiceImpl.java
@@ -1041,7 +1041,7 @@ public class ContractManageServiceImpl extends BaseServiceImpl<ContractManageMap
 
 	/**
 	 * 高风险/黑名单客商提交校验：甲/乙方为外部客商且高风险（C101-1 风险等级=2）或黑名单时，
-	 * 必须已上传「特批说明」类型附件（attachmentType=spec_explanation）；内部组织类型客商默认无风险
+	 * 必须已上传「特批说明」类型附件（fileType=特批说明，业务字典 contract_attachment_type）；内部组织类型客商默认无风险
 	 *
 	 * @param contractManage 合同单
 	 */
diff --git a/blade-service/blade-transport/src/main/java/org/springblade/transport/support/hcs/HcsContractSyncSupport.java b/blade-service/blade-transport/src/main/java/org/springblade/transport/support/hcs/HcsContractSyncSupport.java
index 38bb48de..72c935b0 100644
--- a/blade-service/blade-transport/src/main/java/org/springblade/transport/support/hcs/HcsContractSyncSupport.java
+++ b/blade-service/blade-transport/src/main/java/org/springblade/transport/support/hcs/HcsContractSyncSupport.java
@@ -212,7 +212,7 @@ public class HcsContractSyncSupport {
 	}
 
 	/**
-	 * 筛选合同「特批说明」类型附件（attachmentType=spec_explanation）并转传合规（C103-2），
+	 * 筛选合同「特批说明」类型附件（fileType=特批说明，业务字典 contract_attachment_type）并转传合规（C103-2），
 	 * 返回特批附件引用；无特批说明附件返回空列表（提交时已强制校验，此处由 C103-8 防御性拦截）
 	 */
 	private List<HcsAttachmentRefDTO> transferSpecExplanationAttachments(ContractManage contractManage) {