In the situation of rapid development of computer network technology and the goal of cultivating scientific abilities of college students,the reform plan for computer network experimental courses is proposed to address the problems in current computer network practical teaching.The system of computer network experimental modules is constructed from three aspects:communication,protocol,and application.By comprehensively utilizing on-site experiments,online virtual environments,and virtual simulation teaching methods,the reform plan can fully stimulate students'interest in learning,effectively leverage their learning expertise,and actively carry out computer network practical teaching under limited investment in teaching facilities.