The invention provides a use method of a complex type solid fumigation disinfectant. The use method comprises the following steps: providing the complex type solid fumigation disinfectant, wherein thecompound solid fumigation disinfectant comprises a main agent and additives, the main agent comprises peroxide, the additives comprise an activator and an excitant, and the activator comprises an organic compound containing acyl or ester; uniformly mixing the main agent and the additives according to a preset ratio; while the solid fumigation disinfectant is heated, oscillating by ultraphonic, and enabling the solid fumigation disinfectant to react and release disinfection active gas.