Abstract: Under the conditions of Junge aerosol spectral distribution, approximate expressions governing the nucleation scavenging of aerosol particles are derived. The numerical results are well consistent with analytical solutions within a specific range. For the nucleation scavenging efficiency of continental and maritime aerosols, the entrainment of model ascending air parcels (with the exception of the spectral distribution) is dependent on such physical-chemical factors as chemical composition of the aerosols, entrainment rate of the ascending air parcels, the accommodation coefficient of water vapor condensation and cloud-base temperature.