To provide a dolly for carrying a golf bag, which is compact along with excellent housing performance, wherein the golf bag can be detached with a simple structure.

The dolly includes a golf-bag mounting board 110 for placing the golf bag 10, and freely adjustable casters 120 attached on an undersurface of the mounting board, while having a golf-bag mounting part 111 for placing the bottom part of the golf bag on a top surface of the golf-bag mounting board. A magnet 150 is provided on a portion of the mounting part, and a magnetized part provided on the bottom part of the golf bag is brought into contact with the magnet on the mounting part, so as to fix the golf bag on the magnetized part of the bottom part thereof by a magnetic force of the magnet on the mounting part. Further, the magnetized part of the golf bag is shifted so as to be separated from the magnet of the golf-bag mounting part, thereby releasing the magnetic constraint on the magnetized part by the magnetic force applied from the magnet and separating the golf bag from the dolly for carrying the golf bag.