Abstract: The computer network is a stronger practical course. For experimental skills of computer network, it designed the testing platform based on Browser/Servers tructure. The system architecture consists of user interface layer, application service layer, and data access layer. According to permissions, it is separated into teacher module and student module. And the computer networkis divided into basic experimental skills and integrative experimental skills which correspond to the different tests. Then it is constructed and consummated questions bank. An on-line testing system is realized to improve efficiency and reliability of experimental teaching work.