diff --git a/build/service/shutdown.sh b/build/service/shutdown.sh
index 6eb96a3..f36c684 100755
--- a/build/service/shutdown.sh
+++ b/build/service/shutdown.sh
@@ -11,5 +11,5 @@ then
 else
         kill -9 $EDASPID
         echo $EXE_PATH
-        echo 'Shutdown successfully.'
+        echo 'Shutdown tank successfully.'
 fi
\ No newline at end of file
diff --git a/build/service/startup.sh b/build/service/startup.sh
index cc644ed..cea85b2 100755
--- a/build/service/startup.sh
+++ b/build/service/startup.sh
@@ -8,6 +8,7 @@ EXE_PATH=$TANK_DIR/tank
 
 if [ -f "$EXE_PATH" ]; then
  nohup $EXE_PATH >/dev/null 2>&1 &
+ echo 'Start tank successfully!'
 else
  echo 'Cannot find $EXE_PATH.'
  exit 1
diff --git a/rest/install.go b/rest/install.go
index fc08484..855e23a 100644
--- a/rest/install.go
+++ b/rest/install.go
@@ -98,7 +98,7 @@ func InstallDatabase() {
 			LogPanic("超级管理员邮箱必填！")
 		}
 
-		createUser := "CREATE TABLE `tank10_user` (`uuid` char(36) NOT NULL,`role` varchar(45) DEFAULT 'USER',`username` varchar(255) DEFAULT NULL COMMENT '昵称',`password` varchar(255) DEFAULT NULL COMMENT '密码',`email` varchar(45) DEFAULT NULL COMMENT '邮箱',`phone` varchar(45) DEFAULT NULL COMMENT '电话',`gender` varchar(45) DEFAULT 'UNKNOWN' COMMENT '性别，默认未知',`city` varchar(45) DEFAULT NULL COMMENT '城市',`avatar_url` varchar(255) DEFAULT NULL COMMENT '头像链接',`last_time` datetime DEFAULT NULL COMMENT '上次登录使劲按',`last_ip` varchar(45) DEFAULT NULL,`status` varchar(45) DEFAULT 'OK',`sort` bigint(20) DEFAULT NULL,`modify_time` timestamp NULL DEFAULT NULL,`create_time` timestamp NULL DEFAULT CURRENT_TIMESTAMP COMMENT '创建时间',PRIMARY KEY (`uuid`),UNIQUE KEY `id_UNIQUE` (`uuid`)) ENGINE=InnoDB DEFAULT CHARSET=utf8 COMMENT='用户表描述';"
+		createUser := "CREATE TABLE `tank10_user` (`uuid` char(36) NOT NULL,`role` varchar(45) DEFAULT 'USER',`username` varchar(255) DEFAULT NULL COMMENT '昵称',`password` varchar(255) DEFAULT NULL COMMENT '密码',`email` varchar(45) DEFAULT NULL COMMENT '邮箱',`phone` varchar(45) DEFAULT NULL COMMENT '电话',`gender` varchar(45) DEFAULT 'UNKNOWN' COMMENT '性别，默认未知',`city` varchar(45) DEFAULT NULL COMMENT '城市',`avatar_url` varchar(255) DEFAULT NULL COMMENT '头像链接',`last_time` datetime DEFAULT NULL COMMENT '上次登录使劲按',`last_ip` varchar(45) DEFAULT NULL,`size_limit` int(11) DEFAULT '-1' COMMENT '该账号上传文件的大小限制，单位byte。<0 表示不设限制',`status` varchar(45) DEFAULT 'OK',`sort` bigint(20) DEFAULT NULL,`modify_time` timestamp NULL DEFAULT NULL,`create_time` timestamp NULL DEFAULT CURRENT_TIMESTAMP COMMENT '创建时间',PRIMARY KEY (`uuid`),UNIQUE KEY `id_UNIQUE` (`uuid`)) ENGINE=InnoDB DEFAULT CHARSET=utf8 COMMENT='用户表描述';"
 		db = db.Exec(createUser)
 		if db.Error != nil {
 			LogPanic(db.Error)
@@ -118,6 +118,7 @@ func InstallDatabase() {
 		user.Email = CONFIG.AdminEmail
 		user.Phone = ""
 		user.Gender = USER_GENDER_UNKNOWN
+		user.SizeLimit = -1
 		user.Status = USER_STATUS_OK
 
 		db.Create(user)
diff --git a/rest/matter_service.go b/rest/matter_service.go
index 006ee27..626208b 100644
--- a/rest/matter_service.go
+++ b/rest/matter_service.go
@@ -92,6 +92,13 @@ func (this *MatterService) Upload(file multipart.File, user *User, puuid string,
 	written, err := io.Copy(distFile, file)
 	this.PanicError(err)
 
+	//判断用户自身上传大小的限制。
+	if user.SizeLimit >= 0 {
+		if written > user.SizeLimit {
+			panic("您最大只能上传" + HumanFileSize(user.SizeLimit, false) + "的文件")
+		}
+	}
+
 	//查找文件夹下面是否有同名文件。
 	matters := this.matterDao.ListByUserUuidAndPuuidAndDirAndName(user.Uuid, puuid, false, filename)
 	//如果有同名的文件，那么我们直接覆盖同名文件。
diff --git a/rest/user_controller.go b/rest/user_controller.go
index e592667..14e0376 100644
--- a/rest/user_controller.go
+++ b/rest/user_controller.go
@@ -93,16 +93,16 @@ func (this *UserController) Create(writer http.ResponseWriter, request *http.Req
 
 	username := request.FormValue("username")
 	if m, _ := regexp.MatchString(`^[0-9a-zA-Z_]+$`, username); !m {
-		return this.Error(`用户名必填，且只能包含字母，数字和'_''`)
+		panic(`用户名必填，且只能包含字母，数字和'_''`)
 	}
 	password := request.FormValue("password")
 	if len(password) < 6 {
-		return this.Error(`密码长度至少为6位`)
+		panic(`密码长度至少为6位`)
 	}
 
 	email := request.FormValue("email")
 	if email == "" {
-		return this.Error("邮箱必填！")
+		panic("邮箱必填！")
 	}
 
 	phone := request.FormValue("phone")
@@ -110,24 +110,38 @@ func (this *UserController) Create(writer http.ResponseWriter, request *http.Req
 	role := request.FormValue("role")
 	city := request.FormValue("city")
 
+	//判断用户上传大小限制。
+	sizeLimitStr := request.FormValue("sizeLimit")
+	var sizeLimit int64 = 0
+	if sizeLimitStr == "" {
+		panic("用户上传限制必填！")
+	} else {
+		intsizeLimit, err := strconv.Atoi(sizeLimitStr)
+		if err != nil {
+			this.PanicError(err)
+		}
+		sizeLimit = int64(intsizeLimit)
+	}
+
 	//判断重名。
 	if this.userDao.CountByUsername(username) > 0 {
-		return this.Error(username + "已经被其他用户占用。")
+		panic(username + "已经被其他用户占用。")
 	}
 	//判断邮箱重名
 	if this.userDao.CountByEmail(email) > 0 {
-		return this.Error(email + "已经被其他用户占用。")
+		panic(email + "已经被其他用户占用。")
 	}
 
 	user := &User{
-		Role:     GetRole(role),
-		Username: username,
-		Password: GetBcrypt(password),
-		Email:    email,
-		Phone:    phone,
-		Gender:   gender,
-		City:     city,
-		Status:   USER_STATUS_OK,
+		Role:      GetRole(role),
+		Username:  username,
+		Password:  GetBcrypt(password),
+		Email:     email,
+		Phone:     phone,
+		Gender:    gender,
+		City:      city,
+		SizeLimit: sizeLimit,
+		Status:    USER_STATUS_OK,
 	}
 
 	user = this.userDao.Create(user)
@@ -145,13 +159,29 @@ func (this *UserController) Edit(writer http.ResponseWriter, request *http.Reque
 	city := request.FormValue("city")
 
 	currentUser := this.checkUser(writer, request)
-	if currentUser.Role != USER_ROLE_ADMINISTRATOR {
+	user := this.userDao.CheckByUuid(uuid)
+
+	if currentUser.Role == USER_ROLE_ADMINISTRATOR {
+		//只有管理员可以改变用户上传的大小
+		//判断用户上传大小限制。
+		sizeLimitStr := request.FormValue("sizeLimit")
+		var sizeLimit int64 = 0
+		if sizeLimitStr == "" {
+			panic("用户上传限制必填！")
+		} else {
+			intsizeLimit, err := strconv.Atoi(sizeLimitStr)
+			if err != nil {
+				this.PanicError(err)
+			}
+			sizeLimit = int64(intsizeLimit)
+		}
+		user.SizeLimit = sizeLimit
+	} else {
 		if currentUser.Uuid != uuid {
 			return this.Error(RESULT_CODE_UNAUTHORIZED)
 		}
 	}
 
-	user := this.userDao.CheckByUuid(uuid)
 	user.AvatarUrl = avatarUrl
 	user.Phone = phone
 	user.Gender = GetGender(gender)
diff --git a/rest/user_model.go b/rest/user_model.go
index aa0f725..0054745 100644
--- a/rest/user_model.go
+++ b/rest/user_model.go
@@ -36,6 +36,7 @@ type User struct {
 	AvatarUrl string    `json:"avatarUrl"`
 	LastIp    string    `json:"lastIp"`
 	LastTime  time.Time `json:"lastTime"`
+	SizeLimit int64     `json:"sizeLimit"`
 	Status    string    `json:"status"`
 }
 
diff --git a/rest/util_string.go b/rest/util_string.go
new file mode 100644
index 0000000..7e24796
--- /dev/null
+++ b/rest/util_string.go
@@ -0,0 +1,36 @@
+package rest
+
+import (
+	"fmt"
+	"strconv"
+)
+
+//把一个大小转变成方便读的格式
+//human readable file size
+func HumanFileSize(bytes int64, si bool) string {
+	var thresh int64 = 1000
+	if si {
+		thresh = 1024
+	}
+	if bytes < 0 {
+		bytes = 0
+	}
+	if bytes < thresh {
+		return fmt.Sprintf("%dB", bytes)
+	}
+	var units = []string{"kB", "MB", "GB", "TB", "PB", "EB", "ZB", "YB"}
+	if si {
+		units = []string{"KiB", "MiB", "GiB", "TiB", "PiB", "EiB", "ZiB", "YiB"}
+	}
+	var u = 0
+	var tmp = float64(bytes)
+	var standard = float64(thresh)
+	for tmp >= standard && u < len(units)-1 {
+		tmp /= float64(standard)
+		u++
+	}
+
+	numStr := strconv.FormatFloat(tmp, 'f', 1, 64)
+
+	return fmt.Sprintf("%s%s", numStr, units[u])
+}