diff --git a/internal/domains/api/dto/api_request_dto.go b/internal/domains/api/dto/api_request_dto.go
index a65ff9f..46047c3 100644
--- a/internal/domains/api/dto/api_request_dto.go
+++ b/internal/domains/api/dto/api_request_dto.go
@@ -500,3 +500,7 @@ type IVYZ8I9JReq struct {
 	IDCard   string `json:"id_card" validate:"required,validIDCard"`
 	MobileNo string `json:"mobile_no" validate:"required,min=11,max=11,validMobileNo"`
 }
+
+type YYSY9E4AReq struct {
+	MobileNo string `json:"mobile_no" validate:"required,min=11,max=11,validMobileNo"`
+}
diff --git a/internal/domains/api/services/api_request_service.go b/internal/domains/api/services/api_request_service.go
index aeac680..cc08b5b 100644
--- a/internal/domains/api/services/api_request_service.go
+++ b/internal/domains/api/services/api_request_service.go
@@ -153,6 +153,7 @@ func registerAllProcessors(combService *comb.CombService) {
 		"YYSY9A1B": yysy.ProcessYYSY9A1BRequest,
 		"YYSY8C2D": yysy.ProcessYYSY8C2DRequest,
 		"YYSY7D3E": yysy.ProcessYYSY7D3ERequest,
+		"YYSY9E4A": yysy.ProcessYYSY9E4ARequest,
 		
 		// IVYZ系列处理器
 		"IVYZ0B03": ivyz.ProcessIVYZ0B03Request,
diff --git a/internal/domains/api/services/form_config_service.go b/internal/domains/api/services/form_config_service.go
index 197bd01..c5c377c 100644
--- a/internal/domains/api/services/form_config_service.go
+++ b/internal/domains/api/services/form_config_service.go
@@ -145,6 +145,7 @@ func (s *FormConfigServiceImpl) getDTOStruct(apiCode string) interface{} {
 		"YYSY9A1B": &dto.YYSY9A1BReq{},
 		"YYSY8C2D": &dto.YYSY8C2DReq{},
 		"YYSY7D3E": &dto.YYSY7D3EReq{},
+		"YYSY9E4A": &dto.YYSY9E4AReq{},
 		"JRZQ6F2A": &dto.JRZQ6F2AReq{},
 		"JRZQ8B3C": &dto.JRZQ8B3CReq{},
 		"JRZQ9D4E": &dto.JRZQ9D4EReq{},
diff --git a/internal/domains/api/services/processors/yysy/yysy9e4a_processor.go b/internal/domains/api/services/processors/yysy/yysy9e4a_processor.go
new file mode 100644
index 0000000..cad567e
--- /dev/null
+++ b/internal/domains/api/services/processors/yysy/yysy9e4a_processor.go
@@ -0,0 +1,49 @@
+package yysy
+
+import (
+	"context"
+	"encoding/json"
+	"errors"
+
+	"tyapi-server/internal/domains/api/dto"
+	"tyapi-server/internal/domains/api/services/processors"
+	"tyapi-server/internal/infrastructure/external/zhicha"
+)
+
+// ProcessYYSY9E4ARequest YYSY9E4A API处理方法 - 手机号归属地查询
+func ProcessYYSY9E4ARequest(ctx context.Context, params []byte, deps *processors.ProcessorDependencies) ([]byte, error) {
+	var paramsDto dto.YYSY9E4AReq
+	if err := json.Unmarshal(params, &paramsDto); err != nil {
+		return nil, errors.Join(processors.ErrSystem, err)
+	}
+
+	if err := deps.Validator.ValidateStruct(paramsDto); err != nil {
+		return nil, errors.Join(processors.ErrInvalidParam, err)
+	}
+
+	encryptedMobileNo, err := deps.ZhichaService.Encrypt(paramsDto.MobileNo)
+	if err != nil {
+		return nil, errors.Join(processors.ErrSystem, err)
+	}
+
+	reqData := map[string]interface{}{
+		"phone": encryptedMobileNo,
+	}
+
+	respData, err := deps.ZhichaService.CallAPI(ctx, "ZCI026", reqData)
+	if err != nil {
+		if errors.Is(err, zhicha.ErrDatasource) {
+			return nil, errors.Join(processors.ErrDatasource, err)
+		} else {
+			return nil, errors.Join(processors.ErrSystem, err)
+		}
+	}
+
+	// 将响应数据转换为JSON字节
+	respBytes, err := json.Marshal(respData)
+	if err != nil {
+		return nil, errors.Join(processors.ErrSystem, err)
+	}
+
+	return respBytes, nil
+}