diff --git a/internal/biz/provider_set.go b/internal/biz/provider_set.go
index e745ee0..88b6c71 100644
--- a/internal/biz/provider_set.go
+++ b/internal/biz/provider_set.go
@@ -2,4 +2,4 @@ package biz
 
 import "github.com/google/wire"
 
-var ProviderSetBiz = wire.NewSet(NewAiRouterBiz)
+var ProviderSetBiz = wire.NewSet(NewAiRouterBiz, NewSessionBiz)
diff --git a/internal/biz/session.go b/internal/biz/session.go
index 247c4d9..3058e57 100644
--- a/internal/biz/session.go
+++ b/internal/biz/session.go
@@ -52,8 +52,6 @@ func (s *SessionBiz) SessionInit(ctx context.Context, req *entitys.SessionInitRe
 		session = model.AiSession{
 			SysID:     sysConfig.SysID,
 			SessionID: utils.UUID(),
-			CreateAt:  time.Now(),
-			UpdateAt:  time.Now(),
 		}
 		err = s.sessionRepo.Create(&session)
 		if err != nil {
diff --git a/internal/data/impl/base.go b/internal/data/impl/base.go
index bed5281..5491442 100644
--- a/internal/data/impl/base.go
+++ b/internal/data/impl/base.go
@@ -20,7 +20,8 @@ BaseModel 是一个泛型结构体，用于封装GORM数据库通用操作。
 
 // 定义受支持的PO类型集合（可根据需要扩展）, 只有包含表结构才能使用BaseModel，避免使用出现问题
 type PO interface {
-	model.AiSy | model.AiSession | model.AiTask
+	model.AiChatHi |
+		model.AiSy | model.AiSession | model.AiTask
 }
 
 type BaseModel[P PO] struct {
diff --git a/internal/data/model/ai_chat_his.gen.go b/internal/data/model/ai_chat_his.gen.go
new file mode 100644
index 0000000..c6ed4fc
--- /dev/null
+++ b/internal/data/model/ai_chat_his.gen.go
@@ -0,0 +1,25 @@
+// Code generated by gorm.io/gen. DO NOT EDIT.
+// Code generated by gorm.io/gen. DO NOT EDIT.
+// Code generated by gorm.io/gen. DO NOT EDIT.
+
+package model
+
+import (
+	"time"
+)
+
+const TableNameAiChatHi = "ai_chat_his"
+
+// AiChatHi mapped from table <ai_chat_his>
+type AiChatHi struct {
+	HisID     int64      `gorm:"column:his_id;primaryKey" json:"his_id"`
+	SessionID string     `gorm:"column:session_id;not null" json:"session_id"`
+	Role      string     `gorm:"column:role;not null" json:"role"`
+	Content   string     `gorm:"column:content;not null" json:"content"`
+	CreateAt  *time.Time `gorm:"column:create_at;default:CURRENT_TIMESTAMP" json:"create_at"`
+}
+
+// TableName AiChatHi's table name
+func (*AiChatHi) TableName() string {
+	return TableNameAiChatHi
+}
diff --git a/internal/data/model/ai_session.gen.go b/internal/data/model/ai_session.gen.go
index 0206ee0..6f236c0 100644
--- a/internal/data/model/ai_session.gen.go
+++ b/internal/data/model/ai_session.gen.go
@@ -12,14 +12,15 @@ const TableNameAiSession = "ai_session"
 
 // AiSession mapped from table <ai_session>
 type AiSession struct {
-	SysID             int32     `gorm:"column:sys_id;not null" json:"sys_id"`
-	SessionID         string    `gorm:"column:session_id;primaryKey" json:"session_id"`
-	KnowlegeSessionID string    `gorm:"column:knowlege_session_id;not null" json:"knowlege_session_id"`
-	Title             string    `gorm:"column:title;not null" json:"title"`
-	CreateAt          time.Time `gorm:"column:create_at;default:CURRENT_TIMESTAMP" json:"create_at"`
-	UpdateAt          time.Time `gorm:"column:update_at;default:CURRENT_TIMESTAMP" json:"update_at"`
-	Status            int32     `gorm:"column:status;not null" json:"status"`
-	DeleteAt          time.Time `gorm:"column:delete_at" json:"delete_at"`
+	SessionID         string     `gorm:"column:session_id;primaryKey" json:"session_id"`
+	SysID             int32      `gorm:"column:sys_id;not null" json:"sys_id"`
+	KnowlegeSessionID string     `gorm:"column:knowlege_session_id;not null" json:"knowlege_session_id"`
+	Title             string     `gorm:"column:title;not null" json:"title"`
+	CreateAt          *time.Time `gorm:"column:create_at;default:CURRENT_TIMESTAMP" json:"create_at"`
+	UpdateAt          *time.Time `gorm:"column:update_at;default:CURRENT_TIMESTAMP" json:"update_at"`
+	Status            int32      `gorm:"column:status;not null" json:"status"`
+	DeleteAt          *time.Time `gorm:"column:delete_at" json:"delete_at"`
+	UserID            string     `gorm:"column:user_id;comment:用户id" json:"user_id"` // 用户id
 }
 
 // TableName AiSession's table name
diff --git a/internal/data/model/ai_sys.gen.go b/internal/data/model/ai_sys.gen.go
index 0f2fdff..6ed44a4 100644
--- a/internal/data/model/ai_sys.gen.go
+++ b/internal/data/model/ai_sys.gen.go
@@ -22,6 +22,7 @@ type AiSy struct {
 	UpdateAt          time.Time `gorm:"column:update_at;default:CURRENT_TIMESTAMP" json:"update_at"`
 	Status            int32     `gorm:"column:status;not null" json:"status"`
 	DeleteAt          time.Time `gorm:"column:delete_at" json:"delete_at"`
+	Prologue          string    `gorm:"column:prologue;comment:会话开场白" json:"prologue"` // 会话开场白
 }
 
 // TableName AiSy's table name
diff --git a/internal/services/provider_set.go b/internal/services/provider_set.go
index 1fdac15..dbe2e9e 100644
--- a/internal/services/provider_set.go
+++ b/internal/services/provider_set.go
@@ -2,4 +2,4 @@ package services
 
 import "github.com/google/wire"
 
-var ProviderSetServices = wire.NewSet(NewChatService)
+var ProviderSetServices = wire.NewSet(NewChatService, NewSessionService)
diff --git a/internal/services/session.go b/internal/services/session.go
index 44139e0..a9e8139 100644
--- a/internal/services/session.go
+++ b/internal/services/session.go
@@ -10,7 +10,7 @@ type SessionService struct {
 	sessionBiz *biz.SessionBiz
 }
 
-func NewSession(sessionBiz *biz.SessionBiz) *SessionService {
+func NewSessionService(sessionBiz *biz.SessionBiz) *SessionService {
 	return &SessionService{
 		sessionBiz: sessionBiz,
 	}