Abstract: An improved golf clubs mounting structure includes a mounting frame, a movable vertical arm, a movable auxiliary vertical arm and a plurality of jaw elements. The mounting frame has an adjusting seat at its bottoms side for coupling with the movable vertical arm, the distance between the movable vertical arm and the adjusting seat may be easily adjusted. The movable auxiliary vertical arm is joined to the mounting frame by an auxiliary arm support at a middle section of the bottom side of the mounting frame to give stability to the whole structure. The movable auxiliary vertical arm has a support arm provided with slots for engaging the jaw elements for holding additional golf clubs. The movable arm of the mounting frame, the movable vertical arm and the movable auxiliary vertical arm are respectively provided with a clamp portion at their bottom ends to facilitate clamping of the mounting structure to the golf bag.