Double-layer drying rack

The utility model discloses a double-layer airing rack which comprises a base, an installation cylinder is installed at the upper end of the base, an airing device is arranged at the upper end of the installation cylinder, a containing cylinder sliding relative to the installation cylinder is arranged on the outer side of the installation cylinder, and a space exists between the containing cylinder and the installation cylinder to form a containing cavity. The base comprises a plurality of limiting foot stools arranged in the circumferential direction, the outer walls of the top ends of the limiting foot stools are fixedly connected with first limiting assemblies, the inner wall of the containing cylinder is fixedly connected with a limiting ring, after the limiting foot stools are unfolded, the first limiting assemblies abut against the inner wall of the limiting ring, and a second limiting assembly is arranged at the bottom of the mounting cylinder. According to the utility model, the locking step after the