With the development of solar photovoltaic (PV) generation, a large number of waste PV appeared. The purpose of this paper is to discuss the background, causes and the main dealing method of waste photovoltaic (PV) modules. The large-scale research, popularization and application of solar energy are the fundamental reasons for the generation of waste PV modules. It is necessary to have a systematic cognize of the utilization of solar energy before expounding the issue of waste PV modules.