diff --git a/internal/domains/api/services/processors/qygl/qygl5s1i_processor.go b/internal/domains/api/services/processors/qygl/qygl5s1i_processor.go
index f8d1094..4e1cf04 100644
--- a/internal/domains/api/services/processors/qygl/qygl5s1i_processor.go
+++ b/internal/domains/api/services/processors/qygl/qygl5s1i_processor.go
@@ -21,24 +21,23 @@ func ProcessQYGL5S1IRequest(ctx context.Context, params []byte, deps *processors
 	if err := deps.Validator.ValidateStruct(paramsDto); err != nil {
 		return nil, errors.Join(processors.ErrInvalidParam, err)
 	}
-	if paramsDto.EntCode == "" && paramsDto.EntName == "" {
-		return nil, errors.Join(processors.ErrInvalidParam, errors.New("必须提供企业统一信用代码或企业名称中的一个"))
+
+	encryptedEntName, err := deps.ZhichaService.Encrypt(paramsDto.EntName)
+	if err != nil {
+		return nil, errors.Join(processors.ErrSystem, err)
+	}
+	encryptedEntCode, err := deps.ZhichaService.Encrypt(paramsDto.EntCode)
+	if err != nil {
+		return nil, errors.Join(processors.ErrSystem, err)
 	}
 
-	// 优先使用企业名称，否则使用统一信用代码
-	var enterpriseNo, enterpriseName string
+	// 按企业名称时传 enterpriseNo（加密名），按统一信用代码时传 enterpriseName（加密代码）
+	reqData := map[string]interface{}{}
 	if paramsDto.EntName != "" {
-		enterpriseName = paramsDto.EntName
+		reqData["enterpriseNo"] = encryptedEntName
 	}
 	if paramsDto.EntCode != "" {
-		enterpriseNo = paramsDto.EntCode
-	} else {
-		enterpriseNo = "not null"
-	}
-	
-	reqData := map[string]interface{}{
-		"enterpriseNo":   enterpriseNo,
-		"enterpriseName": enterpriseName,
+		reqData["enterpriseName"] = encryptedEntCode
 	}
 
 	respData, err := deps.ZhichaService.CallAPI(ctx, "ZCI088", reqData)