(How to improve the utilization of experimental equipment and instruments, give full play to the functions of experimental equipment, and use the existing equipment resources to achieve the optimal allocation has become the focus of the reform of colleges and research institutions. Open experimental teaching is an effective way to solve the above problems. It can make experiments and scientific research free from the restrictions of time and place, improve the efficiency of teaching and scientific research, give full play to students' creative ability and improve students' comprehensive quality. This paper discusses the teaching system, implementation methods and key technologies of network platform construction in open experimental teaching.)