The invention belongs to the field of ultrafiltration materials, and in particular relates to a zeolite molecular sieve-PVDF-chitosan composite ultrafiltration membrane. The composite ultrafiltrationmembrane is prepared by the method including the following steps: mixing polyvinylidene fluoride, a binary solvent, polyvinylpyrrolidone and nanozeolite according a certain ration to prepare a precursor solution, performing electrostatic spinning to obtain nano composite fibers, and performing coating by using a chitosan layer to obtain the composite ultrafiltration membrane. The composite ultrafiltration membrane provided by the invention has good hydrophilicity and water resistance and better mechanical properties, the chitosan coating can promote water flux performance and antifouling performance of the composite ultrafiltration membrane by increasing wettability and porosity, and the prepared hybrid ultrafiltration membrane has very high potential in the field of water purification.