Based on the second-stage engineering of Shenjiawan passenger terminal,we carry out a physical model experiment to study the uplift wave force distribution of the piled double baffles permeable wharf. The results show that the relative wave height(Hd),relative wave length(Ld),back baffle structure and relative underwater penetration of the back baffle （t2d）have obvious effects on the uplift wave force. Comparing the uplift wave force measured in the experiment and calculated by different formulas,we find that when the relative underwater penetration of the back baffle is equal to or less than 0.65,the formula derived by Zhou Yiren is more applicable to calculate the biggest uplift wave pressure on the face plate. While the formula derived by Guo Da is more applicable when the relative underwater penetration of the back baffle is more than 0.65.