Based on two kinds of pitching maneuvers (Uncheck Maneuver and Check Maneuver) specified in article 25.331(c) of CCAR25, this paper firstly makes an understanding of article 25.331(c), and then compares and analyzes the differences between CCAR25 and CS25. Finally, maneuver simulation calculation for two pitching maneuver situations with/without the consideration of control law was carried out respectively, and then the results of the aircraft response and the tail load calculation were compared and analyzed. The results show that: 1) when the control law is considered, the rudder deflection of the aircraft changes greatly, which leads to the large change of the aircraft’s response attitude and the final maneuvering load during the whole maneuver process; 2) for the unchecked maneuver with the rapidly moving operating device, the response attitude of the aircraft is reduced after considering the control law, and the horizontaltail load is finally reduced; 3) for the checked maneuver with relatively slow moving operating device, the response of the aircraft is more drastic after considering the control law, which finally leads to an increase in the horizontaltail load.