Water surface garbage removing method and device for unit water inlet of hydraulic power plant

The invention discloses a water surface garbage removing method and device for a unit water inlet of a hydraulic power plant. The removing device comprises a movable hoist, a wastes cleaning boat and a scraper pan. The removing method comprises the steps that firstly, the removing device is prepared; secondly, the movable hoist is arranged on a dam wall and connected with the scraper pan through a first rope, and the wastes cleaning boat floats on the water surface and is connected with the scraper pan through a second rope; thirdly, the movable hoist and the wastes cleaning boat are matched with each other to operate so as to hoist the scraper pan to the garbage position at the unit water inlet, then, the movable hoist pays off the first rope, the wastes cleaning board fraps the second rope, and the scraper pan and the garbage at the water inlet are dragged into the wastes cleaning board; and fourthly, the garbage is fished out and put in the wastes cleaning board. According to the removing device, the numbe