diff --git a/api/controller/Public.go b/api/controller/Public.go
index 1c9a206..1d30f8d 100644
--- a/api/controller/Public.go
+++ b/api/controller/Public.go
@@ -10,6 +10,7 @@ import (
 	"hepa-calc-admin-api/api/requests"
 	"hepa-calc-admin-api/api/responses"
 	"hepa-calc-admin-api/config"
+	"hepa-calc-admin-api/extend/aliyun"
 	"hepa-calc-admin-api/global"
 	"hepa-calc-admin-api/utils"
 	"sort"
@@ -337,3 +338,31 @@ func (b *Public) GetIndexData(c *gin.Context) {
 
 	responses.OkWithData(g, 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 := "base/class/"
+
+	// 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
index d46c564..5e25ede 100644
--- a/api/requests/Public.go
+++ b/api/requests/Public.go
@@ -3,6 +3,7 @@ package requests
 type PublicRequest struct {
 	Login        // 登陆
 	GetIndexData // 首页动态统计数据
+	GetOssSign   // 获取oss签名
 }
 
 // Login 登陆
@@ -19,3 +20,8 @@ type GetIndexData struct {
 	StartTime string `json:"start_time" form:"start_time" validate:"required" label:"开始时间"`
 	EndTime   string `json:"end_time" form:"end_time" validate:"required" label:"结束时间"`
 }
+
+// GetOssSign 获取oss签名
+type GetOssSign struct {
+	Scene int `json:"scene" form:"scene" validate:"required,oneof=1 2" label:"场景"` // （1:分类图标）
+}
diff --git a/api/router/router.go b/api/router/router.go
index cb89595..d22a6e6 100644
--- a/api/router/router.go
+++ b/api/router/router.go
@@ -105,6 +105,13 @@ func adminRouter(r *gin.Engine, api controller.Api) {
 		// 首页动态统计数据
 		indexGroup.GET("/data", api.Public.GetIndexData)
 	}
+
+	// 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