Lock catch composite plastic floor

The invention discloses a lock catch composite plastic floor. The lock catch composite plastic floor comprises a floor surface layer and a floor cushion layer which is adhered under the floor surface layer in a connecting way, wherein the rectangular periphery of the floor cushion layer is provided with connecting rabbets, and the connecting rabbets at the periphery of the floor cushion layer are formed by connecting tenons and connecting notches which are in concave-convex matching and can form clamping combination. The lock catch plastic floor is improved in that two adjacent sides of the floor cushion layer and two adjacent sides of the floor surface layer are aligned, the connecting tenons or the connecting notches at another two adjacent sides of the floor cushion layer are just totally bulged from another two adjacent sides of the floor surface layer, the connecting tenons and the connecting notches are in clearance matching, and any one surface or two surfaces of a non-combination part of an adhesion c