The invention relates to aerosol base material and aerosol prepared by the base material, comprising mineral oil whose flash point is larger than or equal to 80degrees C., 40 degrees C. viscosity is smaller than or equal to 25mm<2>/s, surfactant and anti-rust agent, the content of the components are as follows: the mineral oil: 80-93%; the surfactant: 5-15%, the anti-rust agent: 0.5-15%; the aerosol composed of 45-55% base material, 43-50% water and 1.0-10% pesticides EC or wetting powder. The aerosol prepared by the base material has advantages that: rain wash resistant ability is strong, both the pesticides EC or the wetting powder can be used, the pollution to environment is small, the dosage is small, the efficiency is high, the using is safe, the invention is environmental-friendly, and the application range is wide and the like.