Removable pin and box button

The utility model discloses a detachable male and female cross comprising a male cross, a female cross and a fixed axes; wherein the male cross (a hollow cylinder with caps) is composed of a hollow cap, a hollow cylinder and a top of the hollow cylinder; a front half part and the top of the hollow cylinder are divided into greater than or equal to two parts lognitudinally, the female cross is also cylinder with caps composed of a cap, a hollow cylinder and a top of the hollow cylinder; the inner diameter of the hollow cylinder of the female cross is greater than that of the top of the cylinder; the fixed axes is a solid cylinder with caps compose of cap and cylinder. The utility model has the advantages of simple structure, solid, reliable and durable use without opening itself, easy detachment by the owner, double functions of shoes and slipper by transforming the bootlace into the vamp or heel.