Abstract: In recent years, perovskite solar cells have attracted a lot of attention because of their good photoelectric performance and low manufacturing cost. Organic-inorganic hybrid perovskite material in the unstable organic composition with inorganic metal cesium ions to replace the preparation of inorganic perovskite material because of its excellent thermal stability has been the favour of researchers, which with CsPbI₂Br as the photoactive layer of inorganic perovskite solar cells have a great prospect of commercial application. In this paper, the research progress of CsPbI₂Br inorganic perovskite solar cells is systematically introduced from the preparation conditions, ion doping, interface modification and other aspects, and the future development direction of CsPbI₂Br inorganic perovskite solar cells is prospected.