由于制造误差和不平衡力的作用，汽轮机叶片的周向气动力除合成一个力倡外，还合成一个横向力，这个横向力使转子发生进动，在一定条件下会使转子失稳，是转子的一个自激激振力。为保证机器正常工作，应对汽轮机叶片参数进行多目标优化、本文首先导出了力偶和激振力的公式，建立了汽轮机叶片参数的多目标优化设计的数学模型，提出了求解该模型的算法，并给出了算例。 Due to the manufacturing error and imbalance force, the circumferential aerodynamic force of the turbine blade is combined with a force to form a lateral force. This lateral force causes precession of the rotor and destabilizes the rotor under certain conditions. A self-excited vibration of the rotor. In order to ensure the normal operation of the machine, multi-objective optimization of steam turbine blade parameters should be carried out. In this paper, the formulas of force couple and excitation force are derived firstly. The mathematical model of multi-objective optimization design of turbine blade parameters is established. An example is given.