Material screening machine

The utility model discloses a material screening machine. The feeding device comprises a machine frame, a material conveying frame arranged on the machine frame and a feeding hopper arranged on the machine frame. The feeding hopper is located at the feeding end of the material conveying device. The material conveying frame comprises a first roller, a second roller and a metal mesh belt, wherein the first roller and the second roller are rotationally arranged on the rack, and the metal mesh belt is used for conveying materials. The metal mesh belt is in a flexible annular shape and is wound onthe first roller and the second roller; a vibration motor is further arranged on the machine frame, the vibration motor is arranged at the discharging end of the material conveying frame, a motor shaft of the vibration motor is rotationally connected with a center shaft of the second roller, material blocking turned edges are arranged on the two sides of the metal mesh belt, and a driving motor for driving the first rolle