diff --git a/services/asdk/client.go b/services/asdk/client.go
index c378822..ebdedef 100644
--- a/services/asdk/client.go
+++ b/services/asdk/client.go
@@ -61,3 +61,10 @@ func (c *Client) ClearPaySwitchCache(req *ClearPaySwitchCacheReq) (resp *ClearPa
 	err = c.DoAction(req, resp)
 	return
 }
+
+// GetLastLoginGame 查询玩家最近登录游戏所属的根游戏（内网接口，供 AI 客服定位玩家在玩的游戏）
+func (c *Client) GetLastLoginGame(req *LastLoginGameReq) (resp *LastLoginGameResp, err error) {
+	resp = CreateLastLoginGameResp()
+	err = c.DoAction(req, resp)
+	return
+}
diff --git a/services/asdk/last_login_game.go b/services/asdk/last_login_game.go
new file mode 100644
index 0000000..4e5e10b
--- /dev/null
+++ b/services/asdk/last_login_game.go
@@ -0,0 +1,61 @@
+package asdk
+
+import (
+	"strconv"
+	"strings"
+
+	"golib.gaore.com/GaoreGo/gaore-common-sdk-go/sdk/requests"
+	"golib.gaore.com/GaoreGo/gaore-common-sdk-go/sdk/responses"
+)
+
+// LastLoginGameReq
+// 查询玩家最近登录游戏（内网接口，走 /api 分组的内部签名）
+type LastLoginGameReq struct {
+	*requests.RpcRequest
+}
+
+// LastLoginGameResp
+// Data 为空对象（game_id=0、game_sign=""）表示这些账号都没有登录记录，
+// 「查不到」是正常结果而非错误，code 仍为 0。
+type LastLoginGameResp struct {
+	*responses.BaseResponse
+	Code int    `json:"code"`
+	Msg  string `json:"msg"`
+	Data struct {
+		UserName      string `json:"user_name"`
+		GameId        int64  `json:"game_id"`   // 子游戏（包）ID
+		GameSign      string `json:"game_sign"` // 根游戏标识
+		GameName      string `json:"game_name"` // 子游戏名，非根游戏名
+		LastLoginTime int64  `json:"last_login_time"`
+	} `json:"data"`
+	TraceId string `json:"trace_id"`
+}
+
+type LastLoginGameParam struct {
+	Ts        int64
+	Sign      string
+	UserNames []string
+}
+
+// CreateLastLoginGameReq 构造查询请求：多个平台账号一并下发，
+// 服务端在这些账号里挑最近登录的那一条返回。
+func CreateLastLoginGameReq(param LastLoginGameParam) *LastLoginGameReq {
+	req := &LastLoginGameReq{
+		RpcRequest: &requests.RpcRequest{},
+	}
+
+	req.InitWithApiInfo(HOST, VERSION, "/api/user/last_login_game")
+	req.Method = requests.POST
+	req.FormParams = map[string]string{
+		"ts":         strconv.FormatInt(param.Ts, 10),
+		"sign":       param.Sign,
+		"user_names": strings.Join(param.UserNames, ","),
+	}
+	return req
+}
+
+func CreateLastLoginGameResp() *LastLoginGameResp {
+	return &LastLoginGameResp{
+		BaseResponse: &responses.BaseResponse{},
+	}
+}