diff --git a/src/views/gh/improvementProposal/ImprovementProposal.api.ts b/src/views/gh/improvementProposal/ImprovementProposal.api.ts
index 7bb7c3c..16aaa84 100644
--- a/src/views/gh/improvementProposal/ImprovementProposal.api.ts
+++ b/src/views/gh/improvementProposal/ImprovementProposal.api.ts
@@ -112,7 +112,8 @@ export const getLatestProposalSequence = (year) => defHttp.get({url: Api.getLate
 export const startProposalProcess = (id: string) => defHttp.post({ url: Api.startProcess, params: { id } });
 
 /** 删除运行中的改善提案流程，并把业务单据回退为草稿。 */
-export const withdrawProposalProcess = (id: string) => defHttp.post({ url: Api.withdrawProcess, params: { id } });
+export const withdrawProposalProcess = (id: string) =>
+  defHttp.post({ url: Api.withdrawProcess, params: { id } }, { joinParamsToUrl: true });
 
 /** 流程节点专用接口会在任务提交前保存业务字段和网关变量。 */
 export const saveInitialReview = (params) => defHttp.post({ url: Api.bpmInitialReview, params });