Computer network is the core curriculum of computer science,it is also a highly experimental course. This paper based on the experimental teaching situation,in connection with problems of facing the experiment teaching process,refering college's reform program of currently computer network experiment, and combining the actual situation in our laboratory,investigating from the experimental teaching and laboratory building,putting forward reform method of computer network experimental teaching. Based on analysis of computer network characteristics, excavating the link among all levels, expanding knowledge, improving the experimental session and so on. The teaching practice shows that these methods help students to improve interested in learning. Developing analyzed problems and solved problems skills, receiving better teaching results.