A skateboard assembly is provided, including: a base plate having a plurality of first through holes, an ear part formed on the base plate, a second through hole formed on an end of the ear part corresponding to the base plate, a first stopping part formed on an inner periphery of the second through hole, and a protruding part formed on the base plate and having a first groove. The ear part and the protruding part are disposed on a same side of the base plate. The second through hole has a cross section orthogonal to the base plate. The skateboard assembly further comprises buffer members, retaining members, wheel frames, keels and plates, which are assembled and coupled together by a plurality of fastening members, such that the skateboard is assembled.