diff --git a/api/controller/public.go b/api/controller/public.go
index 81af0a6..265dbf8 100644
--- a/api/controller/public.go
+++ b/api/controller/public.go
@@ -2,7 +2,10 @@ package controller
 
 import (
 	"github.com/gin-gonic/gin"
+	"knowledge/api/requests"
 	"knowledge/api/responses"
+	"knowledge/extend/aliyun"
+	"knowledge/global"
 	"knowledge/utils"
 )
 
@@ -20,3 +23,31 @@ func (b *Public) GetCaptcha(c *gin.Context) {
 		"b64s": b64s,
 	}, c)
 }
+
+// GetOssSign 获取oss签名
+func (b *Public) GetOssSign(c *gin.Context) {
+	publicRequest := requests.PublicRequest{}
+	req := publicRequest.GetOssSign
+	if err := c.ShouldBind(&req); err != nil {
+		responses.FailWithMessage(err.Error(), c)
+		return
+	}
+
+	// 参数验证
+	if err := global.Validate.Struct(req); err != nil {
+		responses.FailWithMessage(utils.Translate(err), c)
+		return
+	}
+
+	// 获取oss签名
+	dir := "question/"
+
+	// 生成签名
+	ossSign, err := aliyun.GetOssSign(dir)
+	if err != nil {
+		responses.FailWithMessage("获取签名失败", c)
+		return
+	}
+
+	responses.OkWithData(ossSign, c)
+}
diff --git a/api/requests/Public.go b/api/requests/Public.go
new file mode 100644
index 0000000..5f7b1c9
--- /dev/null
+++ b/api/requests/Public.go
@@ -0,0 +1,10 @@
+package requests
+
+type PublicRequest struct {
+	GetOssSign // 获取oss签名
+}
+
+// GetOssSign 获取oss签名
+type GetOssSign struct {
+	Scene int `json:"scene" form:"scene" validate:"required,oneof=1 2" label:"场景"` // （1:场内题目 2:场外题目）
+}
diff --git a/api/router/router.go b/api/router/router.go
index 9d4a24b..993a6e3 100644
--- a/api/router/router.go
+++ b/api/router/router.go
@@ -111,7 +111,15 @@ func publicRouter(r *gin.Engine, api controller.Api) {
 
 // adminRouter 公共路由-验证权限
 func adminRouter(r *gin.Engine, api controller.Api) {
-
+	adminGroup := r.Group("/admin")
+	{
+		// 签名
+		signGroup := adminGroup.Group("/sign")
+		{
+			// 获取oss签名
+			signGroup.GET("/oss", api.Public.GetOssSign)
+		}
+	}
 }
 
 // basicRouter 基础数据-验证权限