Abstract: A hula hoop is formed of a plurality of spherical bodies, with each having a main body and a pliable connection rod which is provided at the free end thereof with a retaining block. The main body is provided with a receiving slot opposite to the connection rod and extending toward the center of the main body, and an insertion slot extending toward the receiving slot. The insertion slot is provided with a retaining slot corresponding to the center of the main body and greater in inner diameter than the insertion slot. The insertion slot has a width greater than a thickness of the connection rod. The hula hoop is formed of the spherical bodies such that the connection rod of one of the spherical bodies is received in the receiving slot of another one of the spherical bodies via the insertion slot of the another one spherical body, and that the retaining block is retained in the retaining slot.