The rotating brush cleaner is located under the conveyor belt on the return journey of the conveyor, and can effectively clean the adhesion on the roller surface and the bottom of the conveyor belt. The brush can be replaced, and it is easy to replace. The rotating brush cleaner can not only prevent the conveyor belt from deviating, but also extend the service life of the conveyor belt and accessories, prevent accidents, etc. It has powerful functions and is an indispensable accessory for belt conveyors.