A wheel hub includes a support ring (1). The support ring(1) includes an integrally formed inner wheel rim (11), a large span dual bearing support frame (12), and a rotor protection frame support groove (13). A lateral end of the support ring (1) is detachably provided with a tire quick replacing ring (2). The inner wheel rim (11) is provided with a first tire sealing face (101). The tire quick replacing ring (2) is provided with a second tire sealing face (201). A wheel hub motor wheel uses the above mentioned wheel hub. An electric vehicle uses the wheel hub motor wheel. Through the above wheel hub motor wheel and the electric vehicle, rapid replacement of a tire or rapid removal of the tire from the wheel hub for maintenance can be implemented without removing the wheel hub of the wheel from a vehicle body; this allows the replacement or maintenance of the tire to be time-saving, effort-saving, and greatly convenient. In addition, the wheel hub also provides a brake radius as large as possible and a maximized rotor space of an external rotor motor.