diff --git a/library/think/model/relation/BelongsToMany.php b/library/think/model/relation/BelongsToMany.php
index 13a8018d..2985584a 100644
--- a/library/think/model/relation/BelongsToMany.php
+++ b/library/think/model/relation/BelongsToMany.php
@@ -395,7 +395,7 @@ class BelongsToMany extends Relation
 
         if (empty($this->baseQuery)) {
             $relationFk = $this->query->getPk();
-            $query->join($table . ' pivot', 'pivot.' . $foreignKey . '=' . $tableName . '.' . $relationFk)
+            $query->join([$table => 'pivot'], 'pivot.' . $foreignKey . '=' . $tableName . '.' . $relationFk)
                 ->where($condition);
         }
         return $query;
@@ -576,7 +576,7 @@ class BelongsToMany extends Relation
         if (empty($this->baseQuery) && $this->parent->getData()) {
             $pk    = $this->parent->getPk();
             $table = $this->pivot->getTable();
-            $this->query->join($table . ' pivot', 'pivot.' . $this->foreignKey . '=' . $this->query->getTable() . '.' . $this->query->getPk())->where('pivot.' . $this->localKey, $this->parent->$pk);
+            $this->query->join([$table => 'pivot'], 'pivot.' . $this->foreignKey . '=' . $this->query->getTable() . '.' . $this->query->getPk())->where('pivot.' . $this->localKey, $this->parent->$pk);
             $this->baseQuery = true;
         }
     }