The invention relates to a ZnO thin film with a flexible substrate suede structure. The ZnO thin film is prepared by using metal organic chemical vapor deposition technology. Polyethylene terephthalate (PET) is used as a flexible substrate, zinc diethyl and water are used as source materials, borane is used as doped gas, and growth B is doped with ZnO transparent conductive thin films, wherein the structure is PET/ MOCVD-ZnO. The thin film is applied to pin type a-Si thin film solar cells and a-Si/a-Si laminated film solar cells, and the structures are PET/ZnO/pina-Si/Al and PET/ZnO/pin a-Si/pin a-Si/Al respectively. The ZnO thin film has the advantages that: the flexible substrate PET material has low cost and high transmissivity characteristics, and contributes to large-area production and popularization; the thin film can grow at a low temperature by MOCVD technology, the suede structure of the obtained ZnO thin film can directly form, and light scattering is facilitated; and the thin film is applied to the thin film solar cells and has high photoelectric conversion efficiency.