The invention belongs to the technical field of belt scale metering, and particularly relates to a virtual belt scale implementation method based on multi-material automatic identification. The methodincludes the steps of adopting a computer, a belt scale, a programmable logic controller and the materials related to the material charging and conveying equipment operation switches to form a complete system, automatic monitoring and analyzing the current material interruption situation, determining when the material interruption occurs, and automatic matching according to the material switchingtime and the material types of the programmable logic controller. The device has the beneficial effects that the material distribution metering is realized, the material metering function for different types is automatically completed, and manual control is not needed. The problem that the transportation amount of the actual materials cannot be really reflected by metering of different types of materials due to manual operation errors or tardy manual operation is solved.