The present invention discloses an online burr removing device for a wheel. The device comprises a brush moving system, online transfer parts, clamp units, a lifting plate rotating part. When the device is used, one motor can simultaneously drive an inner brush, an outer brush and a plurality of round brushes to rotate, and the rotating speeds of the three kinds of brushes can be appropriate by setting an appropriate drive ratio; the device can avoid the problem that the linear speed is low in the center but high at the outer edge when an integrated brush rotates at the same angular speed; meanwhile, the device has the characteristics of high automation degree, advanced process, simple structure and high safety and stability.