In view of the influence of equivalent conversion distortion in fuzzy conversion process and difference in network records attribute , this paper puts forward such conception as the key attribute table , attributes effect degree and attribute types list , and bring the dynamic feedback mechanism into intrusion detection system , proposes an adaptive intrusion detection method based on the theory of fuzzy 摘要针对模糊转换过程中等价转换失真问题和网络记录中属性差异对入侵检测造成的影响,提出关键属性列表、属性作用度列表和属性类型列表等概念,将动态反馈机制引入入侵检测,提出一种基于模糊理论的自适应入侵检测方法。