The invention discloses a method of preventing corrosion by marine microorganisms by using artificial supper-smooth surfaces. The method comprises the following steps: weighing and taking polycarbonate, acrylonitrile and styrene copolymer, a compatilizer, a flexibilizer, an antioxidant, a lubricating agent, a flame-retardant synergist, a brominated flame retardant, nanoscale dried titanium dioxide, a turpentine assistant for spinning, an acrylic acid type additive with perfluoroalkyl group, a heat-resistant agent and inorganic nanoparticles according to parts by weight; blending the raw materials, mixing and pelletizing the blended materials through a double-screw extruder to obtain mixed material aggregates; preparing the mixed material aggregates into nascent composite filaments through a single screw extruder; cooling the nascent composite filaments and carrying out hot stretching two times; degreasing the stretched composite filaments with high pressure draft and quickly cooling the degreased composite filaments, and using the filament-collecting machine of a torgue motor to collect and roll filament tows of composite filaments to obtain finished products. According to the invention, special proportion and special spinning technology are adopted, so as to improve the surface smoothness, capacity of microbiological corrosion resistance, breaking strength, knot strength, knot use ratio, durability and suitability of rope nets.