The invention discloses a simple limiting conversion socket. Comprising a shell, a circuit board located in the shell, an inner frame, at least two power connection plugs and conducting strips corresponding to the power connection plugs, a sliding groove is formed in the side, facing the pushing head, of the inner frame, and an interference plate is placed in the sliding groove and can move relative to the interior of the sliding groove. According to the invention, the interference plates are arranged on the same side, and after the power connection plugs are pushed each time and the interference plates are pushed, on one hand, the interference plates are staggered to allow the connecting rods of the pushed power connection plugs to pass through, and on the other hand, the connecting rods of the other power connection plugs are blocked, so that only one plate body is moved, and the power connection plugs can be conveniently connected. Therefore, the problem that the power connection plug is pushed out at the same time can be easily avoided, the use safety is ensured, and the occupation of the internal space can be effectively controlled compared with the arrangement of other limiting structures.