The downhole motor tester we manufactured is special equipment for testing sealing performance of new or repaired downhole motor so as to provide features of downhole motor and scientific evidence which will decide the possibility for downhole motor to be run in hole. The tester is consisting of body, water supplying system, hydraulic system and control system. The downhole motor tester is designed on basis of advanced features of same equipment abroad and integrates with the actual situation in China. With some advantages such as high automatization, easy operation, wide range of use, the downhole motor tester has already obtained favorable comments from the customers.