In order to solve the coupling problem of force and torque generated by the short take-off and vertical landing (STOVL) aircraft in transition phase, and the redundancy problem of the power system actuators, the longitudinal model of aircraft is established firstly, the process of transition phase is refined, and the control law is designed by using nonlinear dynamic inverse (NDI) method. Then, based on NDI, a torque distribution solution method using nonlinear optimization is proposed, and the sequential quadratic programming (SQP) method is applied to adjust and optimize the parameters in the control law. Finally, simulation tests are conducted. The simulation results show that the designed controller can track commands well, and the nonlinear optimization method can solve the torque quickly and accurately. Applying the SQP method can significantly improve the control effect and make it more robust.