Composite test rig

The utility model relates to a test rig for a maintenance device in petroleum drilling, in particular to a composite test rig, which comprises a box body, a bracket, a base, a distribution box and the maintenance device, wherein, an opening is formed at the top of the box body; the base is fixedly mounted on one side at the lower end of the box body; the bracket is fixedly mounted at the top of the box body; the maintenance device is fixedly mounted on the bracket or the base; and an electric output terminal of the distribution box is electrically connected together with an electric input terminal of the maintenance device. The utility model has the advantages that the structure is reasonable and compact, the trouble of on-site test run is avoided, the repairing labor intensity is reduced, the repair time is saved, the volume is small, the investment is small, the operation is convenient, the repairing test of a vacuum degasser and a sand pump can be met, the manufacturing cost is reduced, and the function of