Abstract: During severe accidents of nuclear power plant, spent fuel pool scrubbing is applied in advanced passive pressurized water reactors, as one of the measures to remove radioactive aerosols. In order to evaluate the retention of aerosols in the water pool, the models of typical aerosol removal mechanism were established in the paper, including steam condensation, inertial impaction, gravity sedimentation, centrifugal deposition, and Brownian diffusion. Particle growth of soluble aerosols was considered. An analysis code of aerosol pool scrubbing was realized with FORTRAN language. Three typical low velocity conditions of LACEEspana experiments were simulated by building the experimental device analysis model. The effects of particle size, steam fraction and submerged depth on the pool scrubbing decontamination factor (DF) were analyzed. The results show that calculated values of DF of aerosol pool scrubbing are reasonable compared with experimental results and the validity of the models is preliminarily verified. DF increases with particle size, steam fraction and submerged depth. Soluble aerosol particle growth will significantly enhance DF.