Quilt and quilt core and quilt cover thereof

According to the quilt and the quilt core and the quilt cover thereof, a plurality of first connecting parts are arranged on the outer edge of the quilt core, a plurality of third connecting parts distributed in a matrix shape are arranged on the front face and the back face of the quilt core, a plurality of second connecting parts are arranged on the outer edge of the inner side of the quilt cover, and a plurality of fourth connecting parts distributed in a matrix shape are arranged on the two inner surfaces of the inner side of the quilt cover. The first connecting part and the second connecting part are fixedly connected with each other, and the third connecting part and the fourth connecting part are fixedly connected with each other. In the using process, the quilt core cannot be turned over, curled and shifted in the quilt cover, the quilt cover and the quilt core are tightly attached all the time along with turning over and moving of a user, hollowing and ventilation cannot be generated, the heat reten