The invention belongs to the technical field of network security protection, and discloses a big data computer network security protection device and a control method thereof. The big data computer network security protection device comprises a network vulnerability detection module, a network intrusion detection module, a network virus detection module, a main control module, a network security protection module, a network data encryption module, an access permission control module, a big data processing module, an alarm module and a display module. According to the invention, the collected n...