建立了考虑支承阻尼和转子外阻尼的弹性支承滑动轴承系统模型，通过对该模型的油膜稳定性计算，确立了第１和第２稳定性界限并划分了稳定区，从而进一步证实了上稳定区的存在．同时提出了可以通过保证上稳定区工作条件来解决滑动轴承油膜失稳问题，并通过实例验证了该方法的有效性． The model of the system of elastic bearing with consideration of bearing damping and rotor external damping is established. By calculating the oil film stability of the model, the first and the second stability limits are established and the stability zone is divided, which further confirms that the upper stability zone The presence. At the same time, the problem of the oil film instability of the sliding bearing can be solved by ensuring the working conditions of the upper stable zone. The effectiveness of this method is verified by an example.