The utility model provides a concave quilt. One end of the head of the daily used quilt is made into a concave quilt hole, while one end of the head of the twin quilt is made into two concave quilt holes. A sleeper can arrange the head part in the concave quilt hole; the quilt head can cover the two shoulders when people sleep on the back and the quilt head can droop on the chest part and the back part when people sleep on the side part, thus effectively preventing the shoulder part and the back part from catching cold and preventing the occurrence of cold and periarthritis of shoulder.