In the flow hydrometry for small rivers or channels, if flow velocity is high, it is inconvenient to use manual bridge measurement or scoopfish ADCP. In order to solve this problem, we developed a flow measuring device composed of orbital base lifting, driving, brake set, hanging rod part, counter and suspension rod holder. The device using suspension rods equipped with flow meter, can horizontally and vertically move, so as to accurately reach the section to be monitored. This device has been used to the end of the Niulanjiang-Dianchi Water-Delivery Project for 2 years. The result shwo that the device operation is stable and reliable when the high flow velocity is 3-5m/s