Hollow polyethersulfone fiber ultrafiltration membrane capable of resisting biological pollution and preparation method of membrane

The invention relates to a preparation method of a hollow polyethersulfone fiber ultrafiltration membrane capable of resisting biological pollution. The preparation method comprises the following steps: uniformly dispersing a modified material which is titanium dioxide/chitosan/graphene composite material in an organic solvent through ultrasounds, then adding a polyethersulfone material and an additive, adjusting the temperature of a membrane casting solution, uniformly stirring the solution and then standing the solution to obtain the membrane casting solution; and preparing the hollow fiber ultrafiltration membrane by using a dry-wet phase transformation spinning method, and adjusting the structure and the performance of the ultrafiltration membrane by controlling parameters such as temperatures and composition of a external gel bath and a core solution, working power of a metering pump, flow of the core solution, dragging speed of a membrane filament and the like. The water transmission coefficient of the