A golf bag comprising a bag body, a support bracket and a tilting device. The bag body includes a top frame, a middle frame, a bottom frame, a plurality of support rod provided between the top frame and the middle frame and a joint block for stably coupling the middle frame and the bottom frame. The tilting device includes a fixed leg and a pair of steel wires extending therefrom. The fixed leg has a moveable shank therein, and a notch is formed in an inner side of the moveable shank. The moveable shank also has a support foot in a bottom thereof which can push the moveable shank to move up and down relative to the fixed leg. The middle frame has a Σ-shaped frame which can disengage with the notch by the push of the moveable shank.