Abstract: Based on project model experiments,analysis is made on the influence of the different pervious coefficients of the pervious holes under uplifting pressure.The results show that the uplifting pressure is reduced obviously with the pervious slabs in plunge pool.The different pervious coefficients and spatial integral scales of pulsating-pressure have different effects on different slabs.Meanwhile the relationship between the integral scale in space of the fluctuating pressure and the uplift force acting on slab is analyzed in this paper.And the prediction formula of this uplift force is proposed based on the measured data of experiments.So this study finding can give reference for the design of plunge pools.