Aimed at the problem that airport pavement roughness evaluation indexes and standards fail to make strict distinction between the two different slipping speeds of aircraft respectively on runway and taxiway in existing standard, taking three-meter wavelength as the most disadvantageous wavelength to airport pavement, and taking 0.40g as a discomfort evaluation standard on the basis of airplane speed representative value on the taxiway and on runway of airport rand A and rand B, this paper analyzes the dynamic response of pavement under the action of aircraft by using software ADAMS. The analyzed results show that allowable roughness of taxiway pavement is 57 mm and runway for airport class A is 12 mm, for class B is 19 mm. The analytic results indicate that the allowable roughness is rather closely related with the airplane slipping speed than the airport classification.