The invention discloses a monolith feeding device for an electron-beam smelting furnace. The monolith feeding device comprises a box body, a material pushing device, a feeding vehicle and a material swinging device. Rails corresponding to rolling wheels of the feeding vehicle are arranged on a base plate of the box body. The feeding vehicle is connected with the material swinging device used for driving the whole feeding vehicle to make transverse reciprocating motion. A material pushing rod of the material pushing device is provided with a guide device capable of moving along with a push-pullrod. One end of the guide device is fixedly connected with the material pushing rod, and the other end of the guide device is movably installed on a rail device on the inner side wall of the box body. A movable clamping device used for clamping smelting raw materials is installed at the front end of the material pushing rod. The monolith feeding device for the electron-beam smelting furnace is high in working efficiency and more reliable.