To explore the influence of 〖v.a〗_pos [95] and RPA (Relative Positive Acceleration) factor on emission Characteristics of gasoline vehicles in the RDE (Real Driving Emission ) test , RDE emission test are carried out on three China VI light gasoline vehicles using the OBS-ONE PEMS (Portable Emission Measure System ) under smooth , normal and rough driving behaviors respectively，calculation of window travel dynamics parameters and section travel dynamics parameters and correlation analysis with pollutant emission characteristics. The results show that the fluctuation range of the window's travel dynamics parameters 〖v.a〗_pos [95] and RPA correlation coefficients with CO and PN emission factors of the three vehicles is significantly reduced compared with the travel dynamics parameters prescribed by the regulations. The fluctuation range is 25%-44%, 38%-64% and 73%-96% in urban, rural and motorway respectively. Moreover, the NOX emission factor is only strongly correlated with the RPA of the window. Conclusion: The correlation between the window's travel dynamics parameters 〖v.a〗_pos [95] and RPA and pollutant emission factors is more obvious, which can better reflect the emission levels of pollutants under different driving behaviors.