In the discharge automatic monitoring system, the base plate ADCP device probe is located at the bottom of river, and it is inconvenient for maintenance. The developed equipment has 304 stainless steel bracket with pulley, cable and winch, which can transfer the base plate ADCP probe from river bed to the inspection rack on the bank to maintain, repair, replace, install and debug the probe, and then put the device to the river bed. The application at the Shilichangjie Station show that the equipment is dependable and convenient in operation, and has characteristics of antimagnetic, rust-proof, and anti-corrosion.