diff --git a/dnspod_handler.go b/dnspod_handler.go
index 6a13eac..96aafe9 100644
--- a/dnspod_handler.go
+++ b/dnspod_handler.go
@@ -37,7 +37,7 @@ func (handler *DNSPodHandler) DomainLoop(domain *Domain) {
 
 	for {
 
-		domainID := getDomain(domain.DomainName)
+		domainID := handler.GetDomain(domain.DomainName)
 
 		if domainID == -1 {
 			continue
@@ -53,7 +53,7 @@ func (handler *DNSPodHandler) DomainLoop(domain *Domain) {
 
 		for _, subDomain := range domain.SubDomains {
 
-			subDomainID, ip := getSubDomain(domainID, subDomain)
+			subDomainID, ip := handler.GetSubDomain(domainID, subDomain)
 
 			if subDomainID == "" || ip == "" {
 				log.Printf("domain: %s.%s subDomainID: %s ip: %s\n", subDomain, domain.DomainName, subDomainID, ip)
@@ -63,7 +63,7 @@ func (handler *DNSPodHandler) DomainLoop(domain *Domain) {
 			//Continue to check the IP of sub-domain
 			if len(ip) > 0 && !strings.Contains(currentIP, ip) {
 				log.Printf("%s.%s Start to update record IP...\n", subDomain, domain.DomainName)
-				updateIP(domainID, subDomainID, subDomain, currentIP)
+				handler.UpdateIP(domainID, subDomainID, subDomain, currentIP)
 			} else {
 				log.Printf("%s.%s Current IP is same as domain IP, no need to update...\n", subDomain, domain.DomainName)
 			}
@@ -74,7 +74,7 @@ func (handler *DNSPodHandler) DomainLoop(domain *Domain) {
 	}
 }
 
-func generateHeader(content url.Values) url.Values {
+func (handler *DNSPodHandler) GenerateHeader(content url.Values) url.Values {
 	header := url.Values{}
 	if configuration.LoginToken != "" {
 		header.Add("login_token", configuration.LoginToken)
@@ -95,11 +95,7 @@ func generateHeader(content url.Values) url.Values {
 	return header
 }
 
-func apiVersion() {
-	postData("/Info.Version", nil)
-}
-
-func getDomain(name string) int64 {
+func (handler *DNSPodHandler) GetDomain(name string) int64 {
 
 	var ret int64
 	values := url.Values{}
@@ -107,7 +103,7 @@ func getDomain(name string) int64 {
 	values.Add("offset", "0")
 	values.Add("length", "20")
 
-	response, err := postData("/Domain.List", values)
+	response, err := handler.PostData("/Domain.List", values)
 
 	if err != nil {
 		log.Println("Failed to get domain list...")
@@ -147,7 +143,7 @@ func getDomain(name string) int64 {
 	return ret
 }
 
-func getSubDomain(domainID int64, name string) (string, string) {
+func (handler *DNSPodHandler) GetSubDomain(domainID int64, name string) (string, string) {
 	log.Println("debug:", domainID, name)
 	var ret, ip string
 	value := url.Values{}
@@ -156,7 +152,7 @@ func getSubDomain(domainID int64, name string) (string, string) {
 	value.Add("length", "1")
 	value.Add("sub_domain", name)
 
-	response, err := postData("/Record.List", value)
+	response, err := handler.PostData("/Record.List", value)
 
 	if err != nil {
 		log.Println("Failed to get domain list")
@@ -191,7 +187,7 @@ func getSubDomain(domainID int64, name string) (string, string) {
 	return ret, ip
 }
 
-func updateIP(domainID int64, subDomainID string, subDomainName string, ip string) {
+func (handler *DNSPodHandler) UpdateIP(domainID int64, subDomainID string, subDomainName string, ip string) {
 	value := url.Values{}
 	value.Add("domain_id", strconv.FormatInt(domainID, 10))
 	value.Add("record_id", subDomainID)
@@ -200,7 +196,7 @@ func updateIP(domainID int64, subDomainID string, subDomainName string, ip strin
 	value.Add("record_line", "默认")
 	value.Add("value", ip)
 
-	response, err := postData("/Record.Modify", value)
+	response, err := handler.PostData("/Record.Modify", value)
 
 	if err != nil {
 		log.Println("Failed to update record to new IP!")
@@ -221,7 +217,7 @@ func updateIP(domainID int64, subDomainID string, subDomainName string, ip strin
 
 }
 
-func postData(url string, content url.Values) (string, error) {
+func (handler *DNSPodHandler) PostData(url string, content url.Values) (string, error) {
 	client := &http.Client{}
 
 	if configuration.Socks5Proxy != "" {
@@ -239,7 +235,7 @@ func postData(url string, content url.Values) (string, error) {
 		httpTransport.Dial = dialer.Dial
 	}
 
-	values := generateHeader(content)
+	values := handler.GenerateHeader(content)
 	req, _ := http.NewRequest("POST", "https://dnsapi.cn"+url, strings.NewReader(values.Encode()))
 
 	req.Header.Set("Content-Type", "application/x-www-form-urlencoded")
diff --git a/godns.go b/godns.go
index f92a9d0..e22e653 100644
--- a/godns.go
+++ b/godns.go
@@ -12,6 +12,10 @@ const (
 	PANIC_MAX = 5
 	// INTERVAL is minute
 	INTERVAL = 5
+	// DNSPod
+	DNSPOD = "DNSPod"
+	// HE
+	HE = "HE"
 )
 
 var (
@@ -49,7 +53,7 @@ func main() {
 }
 
 func dnsLoop() {
-	handler := createHandler(configuration.Type)
+	handler := createHandler(configuration.Provider)
 	for _, domain := range configuration.Domains {
 		go handler.DomainLoop(&domain)
 	}
diff --git a/handler.go b/handler.go
index 13a1aae..fedd3c1 100644
--- a/handler.go
+++ b/handler.go
@@ -8,9 +8,9 @@ func createHandler(provider string) IHandler {
 	var handler IHandler
 
 	switch provider {
-	case "DNSPod":
+	case DNSPOD:
 		handler = IHandler(&DNSPodHandler{})
-	case "HE":
+	case HE:
 		handler = IHandler(&HEHandler{})
 	}
 
diff --git a/settings.go b/settings.go
index 3c54ba5..bcefb8b 100644
--- a/settings.go
+++ b/settings.go
@@ -15,7 +15,7 @@ type Domain struct {
 
 //Settings struct
 type Settings struct {
-	Type        string   `json:"type"`
+	Provider    string   `json:"provider"`
 	Email       string   `json:"email"`
 	Password    string   `json:"password"`
 	LoginToken  string   `json:"login_token"`
diff --git a/utils.go b/utils.go
index 24bb113..0995a0e 100644
--- a/utils.go
+++ b/utils.go
@@ -59,8 +59,16 @@ func usage() {
 }
 
 func checkSettings(config *Settings) error {
-	if (config.Email == "" || config.Password == "") && config.LoginToken == "" {
-		return errors.New("Input email/password or login token cannot be empty!")
+	if config.Provider == DNSPOD {
+		if (config.Email == "" || config.Password == "") && config.LoginToken == "" {
+			return errors.New("Email/Password or login token cannot be empty!")
+		}
+	} else if config.Provider == HE {
+		if config.Password == "" {
+			return errors.New("Password cannot be empty!")
+		}
+	} else {
+		return errors.New("Please provide supported DNS provider: DNSPod/HE")
 	}
 
 	return nil