diff --git a/library/think/Model.php b/library/think/Model.php
index edd65bf4..692ace0e 100644
--- a/library/think/Model.php
+++ b/library/think/Model.php
@@ -100,7 +100,7 @@ abstract class Model implements \JsonSerializable, \ArrayAccess
     // 验证失败是否抛出异常
     protected $failException = false;
     // 全局查询范围
-    protected static $useGlobalScope = true;
+    protected $useGlobalScope = true;
 
     /**
      * 初始化过的模型.
@@ -1116,8 +1116,8 @@ abstract class Model implements \JsonSerializable, \ArrayAccess
      */
     public static function useGlobalScope($use)
     {
-        $model                  = new static();
-        static::$useGlobalScope = $use;
+        $model                 = new static();
+        $model->useGlobalScope = $use;
         return $model;
     }
 
@@ -1341,8 +1341,8 @@ abstract class Model implements \JsonSerializable, \ArrayAccess
     {
         $query = $this->db();
         // 全局作用域
-        if (static::$useGlobalScope && method_exists($this, 'base')) {
-            call_user_func_array('static::base', [ & $query]);
+        if ($this->useGlobalScope && method_exists($this, 'base')) {
+            call_user_func_array([$this, 'base'], [ & $query]);
         }
         if (method_exists($this, 'scope' . $method)) {
             // 动态调用命名范围
@@ -1358,10 +1358,10 @@ abstract class Model implements \JsonSerializable, \ArrayAccess
     public static function __callStatic($method, $params)
     {
         $query = self::getDb();
-        $model = get_called_class();
+        $model = new static();
         // 全局作用域
-        if (static::$useGlobalScope && method_exists($model, 'base')) {
-            call_user_func_array('static::base', [ & $query]);
+        if ($model->useGlobalScope && method_exists($model, 'base')) {
+            call_user_func_array([$model, 'base'], [ & $query]);
         }
         return call_user_func_array([$query, $method], $params);
     }
diff --git a/library/traits/model/SoftDelete.php b/library/traits/model/SoftDelete.php
index c2c0dfe9..cc279955 100644
--- a/library/traits/model/SoftDelete.php
+++ b/library/traits/model/SoftDelete.php
@@ -12,7 +12,8 @@ trait SoftDelete
      */
     public function trashed()
     {
-        if (!empty($this->data[static::$deleteTime])) {
+        $field = $this->getDeleteTimeField();
+        if (!empty($this->data[$field])) {
             return true;
         }
         return false;
@@ -37,7 +38,8 @@ trait SoftDelete
     public static function onlyTrashed()
     {
         $model = new static();
-        return $model->db()->where(static::$deleteTime, 'exp', 'is not null');
+        $field = $this->getDeleteTimeField();
+        return $model->db()->where($field, 'exp', 'is not null');
     }
 
     /**
@@ -51,10 +53,9 @@ trait SoftDelete
         if (false === $this->trigger('before_delete', $this)) {
             return false;
         }
-
-        if (static::$deleteTime && !$force) {
+        $name = $this->getDeleteTimeField();
+        if (!$force) {
             // 软删除
-            $name              = static::$deleteTime;
             $this->change[]    = $name;
             $this->data[$name] = $this->autoWriteTimestamp($name);
             $result            = $this->isUpdate()->save();
@@ -106,12 +107,10 @@ trait SoftDelete
      */
     public function restore($where = [])
     {
-        if (static::$deleteTime) {
-            // 恢复删除
-            $name = static::$deleteTime;
-            return $this->isUpdate()->save([$name => null], $where);
-        }
-        return false;
+        $name = $this->getDeleteTimeField();
+        // 恢复删除
+        return $this->isUpdate()->save([$name => null], $where);
+
     }
 
     /**
@@ -120,14 +119,28 @@ trait SoftDelete
      * @param \think\db\Query $query 查询对象
      * @return void
      */
-    protected static function base($query)
+    protected function base($query)
     {
-        if (static::$deleteTime) {
-            $query->where(!empty(static::$tableAlias) ?
-                static::$tableAlias . '.' . static::$deleteTime :
-                static::$deleteTime,
-                'null');
-        }
+        $field = $this->getDeleteTimeField(true);
+        $query->where($field, 'null');
     }
 
+    /**
+     * 获取软删除字段
+     * @access public
+     * @param bool  $read 是否查询操作 写操作的时候会自动去掉表别名
+     * @return integer
+     */
+    protected function getDeleteTimeField($read = false)
+    {
+        if (isset($this->deleteTime)) {
+            $field = $this->deleteTime;
+        } else {
+            $field = 'delete_time';
+        }
+        if (!$read && strpos($field, '.')) {
+            list($alias, $field) = explode('.', $field);
+        }
+        return $field;
+    }
 }