The invention discloses a modular spherical net frame universal structure member. The modular spherical net frame universal structure member comprises a main keel and a welding ball, the bottom of thewelding ball is fixedly connected with a disassembling and assembling member, the side of the disassembling and assembling member is movably connected with the side of the main keel, the disassembling and assembling member comprises a sleeve, the top of the sleeve is fixedly connected with the bottom of the welding ball, the side, near the top, of the sleeve is movably connected with the side ofthe main keel, the sleeve is internally provided with a first shaft, a disk fixedly sleeves the surface of the first shaft, the side of the disk slides at the inner wall, near the top, of the sleeve in a limit mode, a spiral groove is formed in the lower surface of the disk, the inner wall of the spiral groove is slidably connected with a sliding column, and the bottom of the sliding column is fixedly connected with a first clamping column. According to the modular spherical net frame universal structural member, through combination using of the structures, the problems that the working efficiency is reduced and using is inconvenient due to the fact that disassembling and assembling of the traditional welding ball and the main keel is not convenient enough in the actual using process are solved.