Nose gear buffering and steering rectification have significant influence on landing gear design. Rigid-flexible coupling dynamic models for both articulated and post nose landing gears have been constructed respectively based on the same aircraft by in this paper. Contrastive analysis and dynamic simulations have been performed by applying previous models, traits of these two types of nose gear on landing buffering and steering performance have been deduced from the analysis. During the same landing case, tangential force is bigger for post nose gear, yet pitching angular velocity after touching ground and nose sinkage remain similar. Articulated nose gear is more likely to sideslip under smaller operating torque, steer angle and lateral acceleration compared with post nose gear. The results of this paper offer a meaningful share of reference materials for nose gear design and selections.