diff --git a/ShadowsocksX-NG/Base.lproj/SubscribePreferenceWindowController.xib b/ShadowsocksX-NG/Base.lproj/SubscribePreferenceWindowController.xib
index 75224e9..fbb57ab 100644
--- a/ShadowsocksX-NG/Base.lproj/SubscribePreferenceWindowController.xib
+++ b/ShadowsocksX-NG/Base.lproj/SubscribePreferenceWindowController.xib
@@ -8,6 +8,8 @@
     <objects>
         <customObject id="-2" userLabel="File's Owner" customClass="SubscribePreferenceWindowController" customModule="ShadowsocksX_NG" customModuleProvider="target">
             <connections>
+                <outlet property="AddSubscribeBtn" destination="nzj-fK-Vip" id="Tlt-DM-cZF"/>
+                <outlet property="DeleteSubscribeBtn" destination="jSv-em-0Gp" id="uDp-Bj-Mb8"/>
                 <outlet property="FeedLabel" destination="uYX-0C-bOD" id="odZ-Tm-7SC"/>
                 <outlet property="FeedTextField" destination="p1W-Md-Wfw" id="zh0-1b-0zw"/>
                 <outlet property="GroupTextField" destination="MrH-Ft-1tn" id="txD-SB-Kpr"/>
@@ -47,7 +49,7 @@
                     </textField>
                     <textField verticalHuggingPriority="750" allowsCharacterPickerTouchBarItem="NO" translatesAutoresizingMaskIntoConstraints="NO" id="hnP-yo-KBb">
                         <rect key="frame" x="236" y="165" width="224" height="22"/>
-                        <textFieldCell key="cell" scrollable="YES" lineBreakMode="clipping" selectable="YES" editable="YES" sendsActionOnEndEditing="YES" state="on" borderStyle="bezel" drawsBackground="YES" id="ASh-mc-Uyt">
+                        <textFieldCell key="cell" scrollable="YES" lineBreakMode="clipping" selectable="YES" editable="YES" sendsActionOnEndEditing="YES" state="on" borderStyle="bezel" placeholderString="Optional" drawsBackground="YES" id="ASh-mc-Uyt">
                             <font key="font" metaFont="system"/>
                             <color key="textColor" name="textColor" catalog="System" colorSpace="catalog"/>
                             <color key="backgroundColor" name="textBackgroundColor" catalog="System" colorSpace="catalog"/>
@@ -71,6 +73,9 @@
                             <behavior key="behavior" pushIn="YES" lightByBackground="YES" lightByGray="YES"/>
                             <font key="font" metaFont="system"/>
                         </buttonCell>
+                        <connections>
+                            <action selector="onAdd:" target="-2" id="giW-QT-LEJ"/>
+                        </connections>
                     </button>
                     <button verticalHuggingPriority="750" translatesAutoresizingMaskIntoConstraints="NO" id="jSv-em-0Gp">
                         <rect key="frame" x="40" y="20" width="20" height="20"/>
@@ -81,6 +86,9 @@
                             <behavior key="behavior" pushIn="YES" lightByBackground="YES" lightByGray="YES"/>
                             <font key="font" metaFont="system"/>
                         </buttonCell>
+                        <connections>
+                            <action selector="onDelete:" target="-2" id="1OX-xh-AJb"/>
+                        </connections>
                     </button>
                     <textField horizontalHuggingPriority="251" verticalHuggingPriority="750" allowsCharacterPickerTouchBarItem="NO" translatesAutoresizingMaskIntoConstraints="NO" id="uNY-1k-LwL">
                         <rect key="frame" x="182" y="205" width="30" height="17"/>
@@ -111,7 +119,7 @@
                         <constraints>
                             <constraint firstAttribute="width" constant="224" id="zre-fn-PCG"/>
                         </constraints>
-                        <textFieldCell key="cell" scrollable="YES" lineBreakMode="clipping" selectable="YES" editable="YES" sendsActionOnEndEditing="YES" state="on" borderStyle="bezel" drawsBackground="YES" id="3kt-n3-uTF">
+                        <textFieldCell key="cell" scrollable="YES" lineBreakMode="clipping" selectable="YES" editable="YES" sendsActionOnEndEditing="YES" state="on" borderStyle="bezel" placeholderString="Optional" drawsBackground="YES" id="3kt-n3-uTF">
                             <font key="font" metaFont="system"/>
                             <color key="textColor" name="textColor" catalog="System" colorSpace="catalog"/>
                             <color key="backgroundColor" name="textBackgroundColor" catalog="System" colorSpace="catalog"/>
diff --git a/ShadowsocksX-NG/ServerProfileManager.swift b/ShadowsocksX-NG/ServerProfileManager.swift
index 9293dfc..cd19a7c 100644
--- a/ShadowsocksX-NG/ServerProfileManager.swift
+++ b/ShadowsocksX-NG/ServerProfileManager.swift
@@ -71,6 +71,32 @@ class ServerProfileManager: NSObject {
         }
     }
     
+    func isExisted(profile: ServerProfile) -> (Bool, Int){
+        for (index, value) in profiles.enumerated() {
+            let ret = value.serverHost == profile.serverHost
+            if ret {
+                return (ret, index)
+            }
+        }
+        return (false, -1)
+    }
+    
+    func isDuplicated(profile: ServerProfile) -> (Bool, Int){
+        for (index, value) in profiles.enumerated() {
+            let ret = value.serverHost == profile.serverHost
+                && value.password == profile.password
+                && value.serverPort == profile.serverPort
+                && value.ssrProtocol == profile.ssrProtocol
+                && value.ssrObfs == profile.ssrObfs
+                && value.ssrObfsParam == value.ssrObfsParam
+                && value.ssrProtocolParam == value.ssrProtocolParam
+            if ret {
+                return (ret, index)
+            }
+        }
+        return (false, -1)
+    }
+
     func importConfigFile() {
         let openPanel = NSOpenPanel()
         openPanel.title = "Choose Config Json File".localized
diff --git a/ShadowsocksX-NG/Subscribe.swift b/ShadowsocksX-NG/Subscribe.swift
index ab44661..e007bdd 100644
--- a/ShadowsocksX-NG/Subscribe.swift
+++ b/ShadowsocksX-NG/Subscribe.swift
@@ -135,11 +135,20 @@ class Subscribe: NSObject{
             let ssrregexp = "ssr://([A-Za-z0-9_-]+)"
             let urls = splitor(url: decodeRes, regexp: ssrregexp)
             let maxN = self.maxCount == -1 ? urls.count: self.maxCount
+            // TODO change the loop into random pick
             for index in 0..<maxN {
                 
                 let profielDict = ParseAppURLSchemes(URL(string: urls[index]))//ParseSSURL(url)
                 if let profielDict = profielDict {
                     let profile = ServerProfile.fromDictionary(profielDict as [String : AnyObject])
+                    let (dupResult, _) = self.profileMgr.isDuplicated(profile: profile)
+                    let (existResult, existIndex) = self.profileMgr.isExisted(profile: profile)
+                    if dupResult {
+                        return
+                    }
+                    if existResult {
+                        return self.profileMgr.profiles.replaceSubrange(Range(existIndex..<existIndex + 1), with: [profile])
+                    }
                     self.profileMgr.profiles.append(profile)
                 }
             }
@@ -158,37 +167,10 @@ class Subscribe: NSObject{
     }
     func feedValidator() -> Bool{
         // is the right format
-        return subscribeFeed != "" && groupName != "" && token != ""
+        return subscribeFeed != "" && groupName != ""
     }
     fileprivate func pushNotification(){
         
-    }
-    fileprivate func isExisted(profile: ServerProfile) -> Bool{
-        // using to url judge
-        // if existed update
-        for (_, value) in profileMgr.profiles.enumerated() {
-            let ret = value.serverHost == profile.serverHost
-            if ret {
-                return ret
-            }
-        }
-        return false
-    }
-    fileprivate func isDuplicated(profile: ServerProfile) -> Bool{
-        // if duplicated skip
-        for (_, value) in profileMgr.profiles.enumerated() {
-            let ret = value.serverHost == profile.serverHost
-                && value.password == profile.password
-                && value.serverPort == profile.serverPort
-                && value.ssrProtocol == profile.ssrProtocol
-                && value.ssrObfs == profile.ssrObfs
-                && value.ssrObfsParam == value.ssrObfsParam
-                && value.ssrProtocolParam == value.ssrProtocolParam
-            if ret {
-                return ret
-            }
-        }
-        return false
     }
     fileprivate func isSame(source: Subscribe, target: Subscribe) -> Bool {
         return source.subscribeFeed == target.subscribeFeed && source.token == target.token && source.maxCount == target.maxCount
diff --git a/ShadowsocksX-NG/SubscribePreferenceWindowController.swift b/ShadowsocksX-NG/SubscribePreferenceWindowController.swift
index 0a2d486..207f96c 100644
--- a/ShadowsocksX-NG/SubscribePreferenceWindowController.swift
+++ b/ShadowsocksX-NG/SubscribePreferenceWindowController.swift
@@ -20,6 +20,8 @@ class SubscribePreferenceWindowController: NSWindowController
     @IBOutlet weak var MaxCountTextField: NSTextField!
     @IBOutlet weak var SubscribeTableView: NSTableView!
 
+    @IBOutlet weak var AddSubscribeBtn: NSButton!
+    @IBOutlet weak var DeleteSubscribeBtn: NSButton!
     
     var sbMgr: SubscribeManager!
     var defaults: UserDefaults!
@@ -42,14 +44,59 @@ class SubscribePreferenceWindowController: NSWindowController
     @IBAction func onOk(_ sender: NSButton) {
         // TODO append to manager and save
         let subscribe = Subscribe.init(initUrlString: FeedTextField.stringValue, initGroupName: GroupTextField.stringValue, initToken: TokenTextField.stringValue, initMaxCount: MaxCountTextField.integerValue)
-        if subscribe.feedValidator() {
-            _ = sbMgr.addSubscribe(oneSubscribe: subscribe)
+        if !subscribe.feedValidator() {
+            return shakeWindows()
         }
+        _ = sbMgr.addSubscribe(oneSubscribe: subscribe)
         subscribe.updateServerFromFeed()
         SubscribeTableView.reloadData()
         window?.performClose(self)
     }
     
+    @IBAction func onAdd(_ sender: NSButton) {
+        if editingSubscribe != nil && !editingSubscribe.feedValidator(){
+            shakeWindows()
+            return
+        }
+        SubscribeTableView.beginUpdates()
+        let subscribe = Subscribe(initUrlString: "", initGroupName: "", initToken: "", initMaxCount: -1)
+        sbMgr.subscribes.append(subscribe)
+        
+        let index = IndexSet(integer: sbMgr.subscribes.count-1)
+        SubscribeTableView.insertRows(at: index, withAnimation: .effectFade)
+        
+        self.SubscribeTableView.scrollRowToVisible(self.sbMgr.subscribes.count-1)
+        self.SubscribeTableView.selectRowIndexes(index, byExtendingSelection: false)
+        SubscribeTableView.endUpdates()
+        updateSubscribeBoxVisible()
+    }
+    
+    @IBAction func onDelete(_ sender: NSButton) {
+        let index = Int(SubscribeTableView.selectedRowIndexes.first!)
+        var deleteCount = 0
+        if index >= 0 {
+            SubscribeTableView.beginUpdates()
+            for (_, toDeleteIndex) in SubscribeTableView.selectedRowIndexes.enumerated() {
+                print(sbMgr.subscribes.count)
+                sbMgr.subscribes.remove(at: toDeleteIndex - deleteCount)
+                SubscribeTableView.removeRows(at: IndexSet(integer: toDeleteIndex - deleteCount), withAnimation: .effectFade)
+                deleteCount += 1
+            }
+            SubscribeTableView.endUpdates()
+        }
+        self.SubscribeTableView.scrollRowToVisible(index - 1)
+        self.SubscribeTableView.selectRowIndexes(IndexSet(integer: index - 1), byExtendingSelection: false)
+        updateSubscribeBoxVisible()
+    }
+    
+    func updateSubscribeBoxVisible() {
+        if sbMgr.subscribes.count <= 0 {
+            DeleteSubscribeBtn.isEnabled = false
+        }else{
+            DeleteSubscribeBtn.isEnabled = true
+        }
+    }
+    
     func bindSubscribe(_ index:Int) {
         if index >= 0 && index < sbMgr.subscribes.count {
             editingSubscribe = sbMgr.subscribes[index]
@@ -69,7 +116,10 @@ class SubscribePreferenceWindowController: NSWindowController
     }
     
     func getDataAtRow(_ index:Int) -> String {
-        return sbMgr.subscribes[index].groupName
+        if sbMgr.subscribes[index].groupName != "" {
+            return sbMgr.subscribes[index].groupName
+        }
+        return sbMgr.subscribes[index].subscribeFeed
     }
     
     // MARK: For NSTableViewDataSource