The utility model discloses an automatic material distribution machine, include: strutting arrangement, conveyor and motor, strutting arrangement fixes on the base including base and support column, support column lower extreme, and the top of support column is rotated with conveyor's bottom and is connected, conveyor is including carrying platform and conveyer belt, and the bench is being carried in the conveyer belt setting, carries platform rear end downside to be provided with two spiral screw rod, electric machine control conveyer belt transported substance material to platform along spiral screw rod horizontal hunting is carried to the simultaneous control, stability when reciprocal swing has been guaranteed about conveyor to the setting up of two spiral screw rod, at the uniform velocity the nature and the reliability, thereby make the even material loading bench that drops on of material, do not need to carry out the manual work again to pave, improved work efficiency.