diff --git a/library/think/db/Connection.php b/library/think/db/Connection.php
index a82dfb44..7720282d 100644
--- a/library/think/db/Connection.php
+++ b/library/think/db/Connection.php
@@ -451,7 +451,7 @@ abstract class Connection
             $this->debug(false, '', true);
 
             if ($query && !empty($this->config['deploy']) && !empty($this->config['read_master'])) {
-                $query->readMaster(true);
+                $query->readMaster();
             }
 
             $this->numRows = $this->PDOStatement->rowCount();
diff --git a/library/think/db/Query.php b/library/think/db/Query.php
index 8ca880fd..21858779 100644
--- a/library/think/db/Query.php
+++ b/library/think/db/Query.php
@@ -145,17 +145,19 @@ class Query
     /**
      * 设置后续从主库读取数据
      * @access public
-     * @param  bool $master
+     * @param  bool $allTable
      * @return void
      */
-    public function readMaster($master = true)
+    public function readMaster($allTable = false)
     {
-        if ($master) {
+        if ($allTable) {
+            $table = '*';
+        } else {
             $table = isset($this->options['table']) ? $this->options['table'] : $this->getTable();
-
-            static::$readMaster[$table] = true;
         }
 
+        static::$readMaster[$table] = true;
+
         return $this;
     }
 
@@ -2942,7 +2944,7 @@ class Query
             }
         }
 
-        if (isset(static::$readMaster[$options['table']])) {
+        if (isset(static::$readMaster['*']) || isset(static::$readMaster[$options['table']])) {
             $options['master'] = true;
         }