The invention belongs to the technical field of compositions for strengthening fracturing, and specifically discloses a method for preparing a film-coated proppant for fracturing, comprising the following steps: (1) preparing raw materials; (2) adding water into a reaction kettle, Heat up; (3) stir, then add acrylamide, 2-acrylamido-2-methylpropanesulfonic acid, polyenamine, dimethyl diallyl ammonium chloride, after the raw material is added, continue to stir; (4 ) When the temperature of the material is stable at 65-75°C, stir, add the initiator, and continue to stir for 4-7min; (5) After reacting for 3.5-4.5h, the drag reducing agent is obtained, and the drag reducing rate of the drag reducing agent reaches more than 25%. Discharging; if it does not meet the requirements, add sodium hydroxide solution to adjust; (6) mix the drag reducer and the proppant body according to the mass fraction ratio of the drag reducer and the proppant body is 0.8-1.5:100, The drag reducer is covered on the surface of the proppant body to obtain the film-coated proppant for fracturing. The film-coated proppant for fracturing prepared by this scheme has good drag reduction and suspension properties.