DETACHABLE AXLE

A detachable axle comprises an axial body, two engaging portions, and two pivoting portions. The two engaging portions are respectively formed on two axial ends of the axial body, each of the engaging portions has an engaging groove, and the engaging groove is radially formed on the engaging portion. The two pivoting portions are respectively formed on the two engaging portions and extend outwards from the engaging portions. In use, the detachable axle is engaged with a general building block by the two engaging portions. The two pivoting portions extend out of the two sides of the building block and wheels are mounted around the two pivoting portions, so the building block has a moving function. The axial body and the building block could be separated to make the building block become the general combining type. The versatility of the general building block is expanded without any limitation.