The invention provides a production system of a hub bearing, in order to solve the technical problems that the hub bearing is to be carried manually and the production speed is low because the structure of the conventional processing device is too simple. The production system of the hub bearing comprises a workbench, wherein an outer ring grinding device for grinding an outer ring of the hub bearing, an inner ring grinding device for grinding an inner ring of the hub bearing, a cleaning device for cleaning the hub bearing, a spraying device for spraying the hub bearing, and a detection device for detecting the hub bearing are sequentially arranged on the workbench. The production system has the advantage of high production speed.