Disclosed is a symmetrical and asymmetrical reconfigurable four-configuration parallel platform. Three branch chains of the parallel platform are of the same structure. A first hook joint, a third hook joint and a fourth hook joint are connected with a movable platform. A second hook joint, a fifth hook joint and a sixth hook joint are connected with a fixed platform. A first arc rotary plate is installed on a first side rod. A second arc rotary plate is installed on a second side rod. A third arc rotary plate is installed on a third side rod. The parallel platform can be flexibly switched between a symmetrical structure and asymmetrical 3-UPU, 2-UPU-URU, 2-URU-UPU and 3-URU configurations, work space of the parallel platform is enlarged on the basis that the advantage of high bearing capacity of the parallel platform is kept, and the parallel platform has wide prospects in engineering application.