A golf bag comprises a bag body (1). A club protection cover (3) capable of axially sliding along a packet mouth (2) is disposed in the packet mouth (2) at an upper end of the bag body (1). A slide mechanism (4) is disposed between the club protection cover (3) and the packet mouth (2). The club protection cover (3) is connected in the packet mouth (2) through the slide mechanism (4). The golf bag can prevent damage to the club, and extend the service life of the club.