Abstract: An improved structure for golf-ball bag, which mainly comprises a stop flap, a bag body and a bag lug; the stop flap and the bag body are made of a resilient material; the inner side of the stop flap is sewed with at least a bag lug; both ends of the bag body not connected with the stop flap are furnished with piping edges respectively; the other two ends of the bag body are sewed together with both ends of the stop flap respectively; the edge of the stop flap is furnished with piping edge; the ball bag has two openings, of which one opening has a higher flap panel extended from the stop flap; the ball bag can be attached to the belt of a user by means of bag lug; when a ball is loading into the bag, the flap panel is used as a guide surface for the ball; since the opening is resilient, the ball loaded in the bag would drop out unintentionally; to pick up the ball out of the ball bag, a user may simply squeeze the bag and push the ball out of the ball-output end.