Temporary plugging agent, preparation method, fracturing method and application of temporary plugging agent

The invention discloses a temporary plugging agent, a preparation method, a fracturing method and application of the temporary plugging agent. Based on the total weight of the temporary plugging agent, the temporary plugging agent comprises the following raw materials: 15-20 wt% of acrylamide; 5 wt% to 10 wt% of 2-acrylamide-2-methylpropanesulfonic acid; 1 wt% to 2 wt% of methyl acrylate; 0.5 wt% to 1 wt% of a cross-linking agent; 0.15 wt% to 0.8 wt% of an initiator; 2 wt%-5 wt% of a solvent; and the balance of water. According to the temporary plugging agent provided by the invention, different dissolution times of the temporary plugging agent at different temperatures can be controlled by adjusting the amounts of the initiator and the cross-linking agent, and different densities of the temporary plugging agent are adjusted by controlling different reaction speeds and different preparation processes; and thus, temporary plugging agent product particles with full floating, floating and sinking and full sinkin