This paper constructs a cyber security experimental platform based on NFV technology. By establishing a virtual network element resource pool and providing functions for automatic deployment of virtual networks and automatic parameter configuration, it helps students quickly set up various experimental environments for cyber security courses. Meanwhile, the experimental platform is integrated with the SPOC teaching system to realize a whole-process experimental assessment for the course. This assessment mechanism can quantitatively evaluate every practical link in the learning process, which not only provides teachers with timely feedback on experimental effects but also helps supervise and stimulate students’ learning enthusiasm.