The invention relates to a room-temperature volatile insecticidal spray composition and application thereof. According to the insecticidal spray, the characteristics of high basic activity and high room-temperature volatility of dimefluthrin,
transfluthrin, tetramethylfluthrin, meperfluthrin, heptafluthrin and metofluthrin are fully utilized; a low-
toxicity and environment-friendly volatilizationaccelerator with the volatilization speed of 300 to 3000 is used; a volatilization auxiliary carrier
solvent with a volatilization speed of 20-300 is used as an auxiliary material; the volatilizationaccelerator and the auxiliary material are mixed according to a specific ratio; a conventional spraying device is adopted; after micron-sized effective component
fog drops are sprayed into an indoor environment, the
solvent is rapidly volatilized, the
fog drops are rapidly refined, on one hand, a faster quick-acting insecticidal effect is achieved, and on the other hand, the effective component
fog drops are permanently suspended and fully dispersed, so that the effective component fog drops are more uniformly dispersed and attached to the surface of a building structure or a household object,and a more stable long-acting volatilization insecticidal effect is achieved.