The utility model discloses a feeding device of a large household garbage incinerator and relates to the technical field of environment-friendly power generation. The feeding device comprises a rack, a feeding port, a discharging port, a pushing trolley and a hydraulic device, wherein the hydraulic device comprises a pushing hydraulic cylinder and an equalizing hydraulic cylinder, the feeding port is arranged above one end of the rack, the pushing trolley is arranged below the feeding port, the pushing trolley is connected with a piston rod of the pushing hydraulic cylinder, a guide wheel is fixedly connected with the bottom of the pushing trolley along the moving direction of the pushing hydraulic cylinder, a supporting wheel is arranged on the rack below the pushing trolley, the pushing trolley comprises an upper layer pushing grate bar and a lower layer pushing grate bar, a clamping opening is arranged below the front end of the lower layer pushing grate bar, a scraping knife is hung inside the clamping opening, an equalizing knife is arranged above the discharging port and connected with the equalizing hydraulic cylinder, and the equalizing knife comprises at least one fan-shaped shear knife. By the aid of the device, the garbage quantity entering the incinerator can be accurately controlled, and the combustion conditions of the incinerator can be adjusted, so that the best condition can be achieved.