The invention relates to an organic and inorganic-hybrid perovskite solar cell based on a ZnO/PCBM/CH3NH3PbI3 light-absorbing layer, and a preparation method of the perovskite solar cell. The solar cell is composed of a glass substrate, an FTO layer served as a cell anode, a ZnO seed layer, a ZnO nano-rod skeleton layer, an organic PCBM layer, a perovskite layer, a Spiro-MeOTAD hole transporting layer and an Au film layer served as a cell cathode. The perovskite solar cell is simple and convenient in preparation method, low in requirement of reaction conditions and obvious in effect. On the premise that the high efficiency is still maintained, the performance stability problem can be overcome to some extent. Based on the above structure, organic materials and inorganic materials are effectively combined, while the advantages of organic materials and the advantages of inorganic materials are given full play to. Therefore, a novel means is provided for the development of perovskite solar cells.