Based on yaw maneuver situation stipulated in article 25.351 of CCAR-25 and rudder control reversal situation stipulated in article 25.353 of CS-25, this paper firstly makes an understanding of article CCAR25.331 and CS25.353, then carries out maneuver simulation calculation for two yaw maneuver situations with/without the consideration of control law respectively, and finally makes a comparative analysis of the aircraft response and the vertical-tail load. The results of calculation and analysis show that: 1) for the yaw maneuver situation, the response attitude of the aircraft is reduced after considering the control law, and the vertical-tail load is reduced; 2) after considering the rudder control reversal, the response attitude of the aircraft and beta are increased, and the vertical-tail load is finally increased;3) the vertical-tail load caused by the rudder control reversal can effectively be reduced after considering the P-Beta control law.