diff --git a/library/think/Model.php b/library/think/Model.php
index e75c18a4..9d75e591 100644
--- a/library/think/Model.php
+++ b/library/think/Model.php
@@ -630,24 +630,12 @@ abstract class Model implements \JsonSerializable, \ArrayAccess
         if ($data instanceof \Closure) {
             call_user_func_array($data, [ & $db]);
             $data = [];
+        } elseif ($data instanceof Query) {
+            return $data->with($with)->cache($cache)->find();
         }
 
-        if ($cache) {
-            // 查找是否存在缓存
-            $name   = basename(str_replace('\\', '/', get_called_class()));
-            $guid   = md5('model_' . $name . '_' . serialize($data));
-            $result = Cache::get($guid);
-            if ($result) {
-                return new static($result);
-            }
-        }
+        $result = self::with($with)->cache($cache)->find($data);
 
-        $result = self::with($with)->find($data);
-
-        if ($cache && $result instanceof Model) {
-            // 缓存模型数据
-            Cache::set($guid, $result->toArray());
-        }
         return $result;
     }
 
@@ -664,6 +652,8 @@ abstract class Model implements \JsonSerializable, \ArrayAccess
         if ($data instanceof \Closure) {
             call_user_func_array($data, [ & $db]);
             $data = [];
+        } elseif ($data instanceof Query) {
+            return $data->with($with)->select();
         }
         return self::with($with)->select($data);
     }
diff --git a/library/think/db/Connection.php b/library/think/db/Connection.php
index b266ba5f..bae052e5 100644
--- a/library/think/db/Connection.php
+++ b/library/think/db/Connection.php
@@ -63,6 +63,7 @@ abstract class Connection
         'password'      => '',
         // 端口
         'hostport'      => '',
+        // 连接dsn
         'dsn'           => '',
         // 数据库连接参数
         'params'        => [],
@@ -80,8 +81,6 @@ abstract class Connection
         'master_num'    => 1,
         // 指定从服务器序号
         'slave_no'      => '',
-        // like字段自动替换为%%包裹
-        'like_fields'   => '',
         // 是否严格检查字段是否存在
         'fields_strict' => true,
     ];
@@ -123,6 +122,18 @@ abstract class Connection
         return call_user_func_array([$this->query, $method], $args);
     }
 
+    /**
+     * 设置当前name
+     * @access public
+     * @param string $name
+     * @return $this
+     */
+    public function name($name)
+    {
+        $this->name = $name;
+        return $this;
+    }
+
     /**
      * 指定当前数据表
      * @param string $table 数据表名称
@@ -150,18 +161,6 @@ abstract class Connection
         return $tableName;
     }
 
-    /**
-     * 设置当前name
-     * @access public
-     * @param string $name
-     * @return $this
-     */
-    public function name($name)
-    {
-        $this->name = $name;
-        return $this;
-    }
-
     /**
      * 获取数据库的配置参数
      * @access public
diff --git a/library/think/db/Query.php b/library/think/db/Query.php
index f25c73ab..3971b0d7 100644
--- a/library/think/db/Query.php
+++ b/library/think/db/Query.php
@@ -13,7 +13,6 @@ namespace think\db;
 
 use PDO;
 use think\Cache;
-use think\Config;
 use think\Db;
 use think\Exception;
 use think\Loader;
@@ -71,7 +70,7 @@ class Query
     }
 
     /**
-     * 获取当前的builder
+     * 获取当前的builder实例对象
      * @access protected
      * @return \think\db\Builder
      */
@@ -305,7 +304,7 @@ class Query
                 }
             }
         } else {
-            $prefix = $this->config['prefix'];
+            $prefix = $this->connection->getAttribute('prefix');
             // 传入的表名为数组
             if (is_array($join)) {
                 if (0 !== $key = key($join)) {
@@ -324,7 +323,7 @@ class Query
             } else {
                 $join = trim($join);
                 if (0 === strpos($join, '__')) {
-                    $table = $this->parseSqlTable($join);
+                    $table = $this->connection->parseSqlTable($join);
                 } elseif (false === strpos($join, '(') && !empty($prefix) && 0 !== strpos($join, $prefix)) {
                     // 传入的表名中不带有'('并且不以默认的表前缀开头时加上默认的表前缀
                     $table = $prefix . $join;
@@ -615,6 +614,26 @@ class Query
         return $this;
     }
 
+    /**
+     * 查询缓存
+     * @access public
+     * @param mixed $key
+     * @param integer $expire
+     * @return $this
+     */
+    public function cache($key = true, $expire = null)
+    {
+        // 增加快捷调用方式 cache(10) 等同于 cache(true, 10)
+        if (is_numeric($key) && is_null($expire)) {
+            $expire = $key;
+            $key    = true;
+        }
+        if (false !== $key) {
+            $this->options['cache'] = ['key' => $key, 'expire' => $expire];
+        }
+        return $this;
+    }
+
     /**
      * 指定group查询
      * @access public
@@ -839,7 +858,7 @@ class Query
             if (in_array($type, [Model::HAS_ONE, Model::BELONGS_TO])) {
                 if (0 == $i) {
                     $joinName  = strtolower(basename(str_replace('\\', '/', $this->options['model'])));
-                    $joinTable = $this->getTableName();
+                    $joinTable = $this->connection->getTableName();
                     $this->table($joinTable)->alias($joinName)->field(true, false, $joinTable, $joinName);
                 }
                 // 预载入封装
@@ -1030,6 +1049,9 @@ class Query
      */
     public function select($data = [])
     {
+        if ($data instanceof Query) {
+            return $data->select();
+        }
         // 分析查询表达式
         $options = $this->parseExpress();
 
@@ -1041,10 +1063,17 @@ class Query
             $this->parsePkWhere($data, $options);
         }
 
-        // 生成查询SQL
-        $sql = $this->builder()->select($options);
-        // 执行查询操作
-        $resultSet = $this->connection->query($sql, $this->getBind(), $options['fetch_sql'], $options['master'], $options['fetch_pdo']);
+        if (isset($options['cache'])) {
+            // 判断查询缓存
+            $cache     = $options['cache'];
+            $key       = is_string($cache['key']) ? $cache['key'] : md5(serialize($options));
+            $resultSet = Cache::get($key);
+        } else {
+            // 生成查询SQL
+            $sql = $this->builder()->select($options);
+            // 执行查询操作
+            $resultSet = $this->connection->query($sql, $this->getBind(), $options['fetch_sql'], $options['master'], $options['fetch_pdo']);
+        }
 
         // 返回结果处理
         if (!empty($resultSet)) {
@@ -1057,18 +1086,21 @@ class Query
                 return $resultSet;
             }
 
+            if (isset($cache)) {
+                // 缓存数据集
+                Cache::set($key, $resultSet, $cache['expire']);
+            }
+
             // 数据列表读取后的处理
             if (!empty($options['model'])) {
-
+                // 生成模型对象
+                $model = $options['model'];
                 foreach ($resultSet as $key => $result) {
-                    if (!empty($options['model'])) {
-                        // 返回模型对象
-                        $result = new $options['model']($result);
-                        $result->isUpdate(true);
-                        // 关联查询
-                        if (!empty($options['relation'])) {
-                            $result->relationQuery($options['relation']);
-                        }
+                    $result = new $model($result);
+                    $result->isUpdate(true);
+                    // 关联查询
+                    if (!empty($options['relation'])) {
+                        $result->relationQuery($options['relation']);
                     }
                     $resultSet[$key] = $result;
                 }
@@ -1089,6 +1121,9 @@ class Query
      */
     public function find($data = [])
     {
+        if ($data instanceof Query) {
+            return $data->find();
+        }
         // 分析查询表达式
         $options = $this->parseExpress();
 
@@ -1098,8 +1133,18 @@ class Query
         }
 
         $options['limit'] = 1;
-        $sql              = $this->builder()->select($options);
-        $result           = $this->connection->query($sql, $this->getBind(), $options['fetch_sql'], $options['master'], $options['fetch_pdo']);
+
+        if (isset($options['cache'])) {
+            // 判断查询缓存
+            $cache  = $options['cache'];
+            $key    = is_string($cache['key']) ? $cache['key'] : md5(serialize($options));
+            $result = Cache::get($key);
+        } else {
+            // 生成查询SQL
+            $sql = $this->builder()->select($options);
+            // 执行查询
+            $result = $this->connection->query($sql, $this->getBind(), $options['fetch_sql'], $options['master'], $options['fetch_pdo']);
+        }
 
         // 数据处理
         if (!empty($result)) {
@@ -1113,6 +1158,11 @@ class Query
                 return $result;
             }
 
+            if (isset($cache)) {
+                // 缓存数据
+                Cache::set($key, $result, $cache['expire']);
+            }
+
             $data = $result[0];
             if (!empty($options['model'])) {
                 // 返回模型对象
@@ -1151,7 +1201,7 @@ class Query
      * @param array $data 表达式
      * @return integer
      */
-    public function delete($data)
+    public function delete($data = [])
     {
         // 分析查询表达式
         $options = $this->parseExpress();