The fully automatic computerized belt feeder is a new type of multifunctional belt feeder used in various cutting machines, sewing machines and so on. Using a micro switch device, the belt feed switch can be automatically turned on according to the working speed of the host. Suitable for different widths and sizes of woven belts, elastic belts, trademarks and other belt-shaped articles. When the unrolled rubber bands, trademarks, etc. are directly placed in the box or fed on the ground, the device can prevent the rubber bands, trademarks, etc. from being twisted and entangled. It has the characteristics of wide use and simple operation, and is the first choice for improving production efficiency, improving product quality, and saving labor.