利用影响系数法，对转子系统现场动平衡技术进行了实验研究并编制了动平衡程序。通过实验，找到了相位不稳定的原因、试重应加的合适位置，并探讨了高速转子二次平衡问题。 By means of influence coefficient method, the field balancing technology of rotor system is experimentally studied and the procedure of dynamic balance is established. Through experiments, the reason of phase instability was found, the appropriate position of test weight should be added, and the secondary balance problem of high speed rotor was discussed.