The ternary metal sulfide CuSbS2 is a kind of earth-abundant and eco-friendly solar cell light absorber layer material, and has characteristics such as high light absorption coefficient, suitable band gap and low melting point. It is expected to be used in building integration, public infrastructure and portable electronics. This paper first summarized the different preparation methods of CuSbS2 thin film by various teams in recent years, and summarized the effects of Cu content and heat treatment on film quality, and then introduced the latest research progress on solar cells, such as the design of cell devices and improvement of conversion efficiency, etc. Finally, the development trend of CuSbS2 thin film solar cells was forecasted.