Chase mortise capable of being assembled snap floor directly

The utility model relates to a chase mortise capable of straight assembling hasp floor and comprises a dash board, a core board, a back board and a groove-level tenon, wherein a tenon end has a chamfering of 45 degrees is positioned, the lower portion of the tenon has a big semicircular chamfering, and an upper surface of the tenon is provided with a positive trapezoidal step of 90 degrees, a slope of 20 degrees is arranged at the root portion of the tenon and extended to the step, a chamfered groove of 90 degrees is opened on an upper surface of a groove, a chamfering of 20 degrees is positioned at the porch of the upper surface of the groove, and a chamfering of 45 degrees is positioned at the porch of an lower surface of the groove. Pavement is capable of straight assembling and freely splicing, the manipulation is simple and easy, and the assembling effect and the assembling stability are enhanced.