diff --git a/api/proto/contact_customer_service_session/proto/contact_customer_service_session_op.go b/api/proto/contact_customer_service_session/proto/contact_customer_service_session_op.go
index c04a55bb..8105949e 100644
--- a/api/proto/contact_customer_service_session/proto/contact_customer_service_session_op.go
+++ b/api/proto/contact_customer_service_session/proto/contact_customer_service_session_op.go
@@ -34,7 +34,7 @@ type OpUpdateResp struct {
 	Data *OpUpdateData `json:"data"`
 }
 
-// op 列表
+// op 列表-mid单查
 type OpListByMidReq struct {
 	base.BaseRequest
 	Mid *int64 `json:"mid"`
@@ -49,6 +49,21 @@ type OpListByMidResp struct {
 	Data *OpListByMidData `json:"data"`
 }
 
+// op 列表-session_id单查
+type OpListBySessionIdReq struct {
+	base.BaseRequest
+	SessionId *int64 `json:"session_id"`
+}
+
+type OpListBySessionIdData struct {
+	Session *dbstruct.ContactCustomerServiceSession `json:"session"`
+}
+
+type OpListBySessionIdResp struct {
+	base.BaseResponse
+	Data *OpListBySessionIdData `json:"data"`
+}
+
 // op 列出所有对话
 type OpListReq struct {
 	base.BaseRequest
diff --git a/api/proto/contact_customer_service_session/proto/not_null_def_op.go b/api/proto/contact_customer_service_session/proto/not_null_def_op.go
index b7a47650..71018ea8 100644
--- a/api/proto/contact_customer_service_session/proto/not_null_def_op.go
+++ b/api/proto/contact_customer_service_session/proto/not_null_def_op.go
@@ -20,3 +20,10 @@ func (p *OpListByMidReq) ProvideNotNullValue() (params []*validator.JsonParam) {
 	params = append(params, validator.NewInt64PtrParam("mid should not be null", p.Mid))
 	return params
 }
+
+// op 列表-session_id单查
+func (p *OpListBySessionIdReq) ProvideNotNullValue() (params []*validator.JsonParam) {
+	params = make([]*validator.JsonParam, 0)
+	params = append(params, validator.NewInt64PtrParam("session_id should not be null", p.SessionId))
+	return params
+}
diff --git a/app/mix/controller/contact_customer_service_session_op.go b/app/mix/controller/contact_customer_service_session_op.go
index 3dbde2cc..925c1873 100644
--- a/app/mix/controller/contact_customer_service_session_op.go
+++ b/app/mix/controller/contact_customer_service_session_op.go
@@ -41,6 +41,21 @@ func OpGetContactCustomerServiceSessionListByMid(ctx *gin.Context) {
 	ReplyOk(ctx, data)
 }
 
+func OpGetContactCustomerServiceSessionListBySessionId(ctx *gin.Context) {
+	req := ctx.MustGet("client_req").(*contact_customer_service_sessionproto.OpListBySessionIdReq)
+	session, ec := service.DefaultService.OpGetContactCustomerServiceSessionListBySessionId(ctx, req)
+	if ec != errcode.ErrCodeContactCustomerServiceSessionSrvOk {
+		logger.Error("OpGetContactCustomerServiceSessionListBySessionId fail, req: %v, ec: %v", util.ToJson(req), ec)
+		ReplyErrCodeMsg(ctx, ec)
+		return
+	}
+
+	data := &contact_customer_service_sessionproto.OpListBySessionIdData{
+		Session: session,
+	}
+	ReplyOk(ctx, data)
+}
+
 func OpGetContactCustomerServiceSessionList(ctx *gin.Context) {
 	req := ctx.MustGet("client_req").(*contact_customer_service_sessionproto.OpListReq)
 	list, ec := service.DefaultService.OpGetContactCustomerServiceSessionList(ctx, req)
diff --git a/app/mix/dao/mongo.go b/app/mix/dao/mongo.go
index 4d61054a..e0102dcc 100644
--- a/app/mix/dao/mongo.go
+++ b/app/mix/dao/mongo.go
@@ -2552,6 +2552,21 @@ func (m *Mongo) GetContactCustomerServiceSessionListByMid(ctx *gin.Context, req
 	return session, err
 }
 
+func (m *Mongo) GetContactCustomerServiceSessionListBySessionId(ctx *gin.Context, req *contact_customer_service_sessionproto.OpListBySessionIdReq) (*dbstruct.ContactCustomerServiceSession, error) {
+	session := &dbstruct.ContactCustomerServiceSession{}
+	col := m.getColContactCustomerServiceSession()
+	query := qmgo.M{
+		"session_id": util.DerefInt64(req.SessionId),
+		"del_flag":   0,
+	}
+	err := col.Find(ctx, query).One(&session)
+	if err == qmgo.ErrNoSuchDocuments {
+		err = nil
+		return nil, err
+	}
+	return session, err
+}
+
 func (m *Mongo) GetContactCustomerServiceSessionList(ctx *gin.Context, req *contact_customer_service_sessionproto.OpListReq) ([]*dbstruct.ContactCustomerServiceSession, error) {
 	list := make([]*dbstruct.ContactCustomerServiceSession, 0)
 	col := m.getColContactCustomerServiceSession()
diff --git a/app/mix/service/logic/contact_customer_service_session.go b/app/mix/service/logic/contact_customer_service_session.go
index 2827bc73..40116a78 100644
--- a/app/mix/service/logic/contact_customer_service_session.go
+++ b/app/mix/service/logic/contact_customer_service_session.go
@@ -62,6 +62,15 @@ func (p *ContactCustomerServiceSession) OpListByMid(ctx *gin.Context, req *conta
 	return session, nil
 }
 
+func (p *ContactCustomerServiceSession) OpListBySessionId(ctx *gin.Context, req *contact_customer_service_sessionproto.OpListBySessionIdReq) (*dbstruct.ContactCustomerServiceSession, error) {
+	session, err := p.store.GetContactCustomerServiceSessionListBySessionId(ctx, req)
+	if err != nil {
+		logger.Error("GetContactCustomerServiceSessionList fail, err: %v", err)
+		return nil, err
+	}
+	return session, nil
+}
+
 func (p *ContactCustomerServiceSession) OpList(ctx *gin.Context, req *contact_customer_service_sessionproto.OpListReq) ([]*dbstruct.ContactCustomerServiceSession, error) {
 	list, err := p.store.GetContactCustomerServiceSessionList(ctx, req)
 	if err != nil {
diff --git a/app/mix/service/opservice_business_validation.go b/app/mix/service/opservice_business_validation.go
index c0d8cd2a..a19d14ab 100644
--- a/app/mix/service/opservice_business_validation.go
+++ b/app/mix/service/opservice_business_validation.go
@@ -1056,6 +1056,23 @@ func (s *Service) OpGetContactCustomerServiceSessionListByMidBusinessValidate(ct
 	return
 }
 
+func (s *Service) OpGetContactCustomerServiceSessionListBySessionIdBusinessValidate(ctx *gin.Context, req *contact_customer_service_sessionproto.OpListBySessionIdReq) (ec errcode.ErrCode) {
+	ec = errcode.ErrCodeContactCustomerServiceSessionSrvOk
+
+	// 1.业务校验
+	result := businessvalidator.NewAuthBusinessValidator(ctx, req).
+		QueryAccount(_DefaultAccount.OpListByMid).
+		EnsureAccountExist().
+		EnsureIsOpRole().
+		Validate().
+		Collect()
+	if ec = result[0].(errcode.ErrCode); ec != errcode.ErrCodeOk {
+		logger.Error("OpGetContactCustomerServiceSessionListBySessionId business validation failed")
+		return
+	}
+	return
+}
+
 func (s *Service) OpGetContactCustomerServiceSessionListBusinessValidate(ctx *gin.Context, req *contact_customer_service_sessionproto.OpListReq) (ec errcode.ErrCode) {
 	ec = errcode.ErrCodeContactCustomerServiceSessionSrvOk
 
diff --git a/app/mix/service/service.go b/app/mix/service/service.go
index 70ca64e8..38fdb9ff 100644
--- a/app/mix/service/service.go
+++ b/app/mix/service/service.go
@@ -2455,6 +2455,23 @@ func (s *Service) OpGetContactCustomerServiceSessionListByMid(ctx *gin.Context,
 	return
 }
 
+func (s *Service) OpGetContactCustomerServiceSessionListBySessionId(ctx *gin.Context, req *contact_customer_service_sessionproto.OpListBySessionIdReq) (session *dbstruct.ContactCustomerServiceSession, ec errcode.ErrCode) {
+
+	ec = errcode.ErrCodeContactCustomerServiceSessionSrvOk
+
+	if ec = s.OpGetContactCustomerServiceSessionListBySessionIdBusinessValidate(ctx, req); ec != errcode.ErrCodeContactCustomerServiceSessionSrvOk {
+		return
+	}
+
+	session, err := _DefaultContactCustomerServiceSession.OpListBySessionId(ctx, req)
+	if err != nil {
+		logger.Error("OpListBySessionId fail, req: %v, err: %v", util.ToJson(req), err)
+		ec = errcode.ErrCodeContactCustomerServiceSessionSrvFail
+		return
+	}
+	return
+}
+
 func (s *Service) OpGetContactCustomerServiceSessionList(ctx *gin.Context, req *contact_customer_service_sessionproto.OpListReq) (list []*dbstruct.ContactCustomerServiceSession, ec errcode.ErrCode) {
 
 	ec = errcode.ErrCodeContactCustomerServiceSessionSrvOk