Starting from view of system and based on the basic principle of non linear control for reference model, the self adaptive control rule in iterative inversion process of conjugate gradient method has been derived, which automatically controls the inversion process. 从系统的观点出发,根据参考模型非线性控制的基本原理,本文导出了共轭梯度法迭代反演过程中的自适应控制规律,从而对反演过程进行了自动控制。