The downstream mooring area of Jinghong hydropower station is close to the downstream approach channel entrance gate.The discharge and power generation of the power station will adversely affect the berthing conditions of the downstream standby ships.We take the method of trail voyage testing to study the downstream mooring area of the anchor parking conditions in the Jinghong hydropower station under different discharge volume.The characteristics of the mooring force and the reasonable standby position of ships are obtained under the different discharge volume.