diff --git a/src/Exchanges/Bitget.php b/src/Exchanges/Bitget.php
index d7d59dd..fd48436 100644
--- a/src/Exchanges/Bitget.php
+++ b/src/Exchanges/Bitget.php
@@ -15,11 +15,6 @@ class BaseBitget
 {
     protected $platform_future=null;
     protected $platform_spot=null;
-    protected $platform_swap=null;
-
-    protected $platform_account=null;
-    protected $platform_margin=null;
-    protected $platform_option=null;
 
     protected $platform='';
     protected $version='';
@@ -41,11 +36,32 @@ protected function checkType($symbol){
         return '';
     }
 
+    /***
+     *Initialize exchange
+     */
+    function getPlatform(string $type=''){
+        switch (strtolower($type)){
+            case 'contract':
+            case 'future':{
+                if($this->platform_future == null) $this->platform_future=new BitgetContractV2($this->key,$this->secret,$this->passphrase,$this->host);
+                $this->platform_future->setOptions($this->options);
+                return $this->platform_future;
+            }
+            case 'spot':
+            default:{
+                if($this->platform_spot == null) $this->platform_spot=new BitgetSpotV2($this->key,$this->secret,$this->passphrase,$this->host);
+                $this->platform_spot->setOptions($this->options);
+                return $this->platform_spot;
+            }
+        }
+        return null;
+    }
+
     /**
     Set exchange transaction category, default "spot" transaction. Other options "spot" "margin" "future" "swap"
      */
     public function setPlatform(string $platform=''){
-        $this->platform=$platform;
+        $this->platform=$platform ?? 'spot';
         return $this;
     }
 
@@ -57,6 +73,7 @@ public function setVersion(string $version=''){
         return $this;
     }
 
+
     /**
      * Support for more request Settings
      * */
@@ -64,27 +81,6 @@ function setOptions(array $options=[]){
         $this->options=$options;
         return $this;
     }
-
-    /***
-     *Initialize exchange
-     */
-    function getPlatform(string $type=''){
-        switch (strtolower($type)){
-            case 'contract':
-            case 'future':{
-                if($this->platform_future == null) $this->platform_future=new BitgetContractV2($this->key,$this->secret,$this->passphrase,$this->host);
-                $this->platform_future->setOptions($this->options);
-                return $this->platform_future;
-            }
-            case 'spot':
-            default:{
-                if($this->platform_spot == null) $this->platform_spot=new BitgetSpotV2($this->key,$this->secret,$this->passphrase,$this->host);
-                $this->platform_spot->setOptions($this->options);
-                return $this->platform_spot;
-            }
-        }
-        return null;
-    }
 }
 
 class AccountBitget extends BaseBitget implements AccountInterface