The invention discloses an intelligent garbage classification system and a management method based on the Internet of Things. The system comprises a fixed part and a non-fixed part of the classification system, wherein the fixed part further comprises a power supply module, a main controller module, garbage can automatic doors, an image recognition module, a voice module, a wireless communicationmodule, a voltage detection module, a voltage conversion module, pressure sensors, a gravity sensor, distance sensors, a time relay, motors and a synchronous belt, the power supply module supplies power to the fixed part of the classification system through the voltage conversion module, the image recognition module comprises a camera and the wireless communication module, the wireless communication module communicates with a mobile terminal, and the wireless communication module communicates with a cloud server; and the non-fixed part is a movable cylinder body, and the movable cylinder bodyis manually replaced after the mobile terminal receives the replacement information. The system has the effects of non-contact automatic opening and closing, automatic garbage classification, automatic garbage overflow replacement reminding and low voltage battery replacement reminding.