A rack with a top reaching a ceiling according to the present invention is easy to assemble and disassemble, and such fastening method will not damage the ceiling but has high stability and is firm and durable. In addition, an arc-shaped cross bar, with a shower curtain or other articles hanging thereon by buckles, can be inserted in and connected to the rack in the Y direction, so it has diversified functions. A three-dimensional structure of the rack can be realized, and telescopic cross bar, telescopic vertical bars and the arc-shaped cross bar can be connected by users according to different needs to structure racks of different shapes.