Abstract: Aiming at the construction status of network security shooting range at home and abroad, combined with the outstanding problems and actual needs of the railway network security work, this paper putted forward the design method about constructing "two storehouses and five domains" railway network security shooting range by research the key technologies such as network simulation and reproduction, network traffic and user behavior simulation, acquisition and analysis of testing data, security isolation and control, and analyzed the expected effect. With the help of the shooting range, scientific research and test tasks such as network security scientific research innovation, attack and defense confrontation drill, security efficiency evaluation and teaching training can be carried out, which is of great significance to the construction of railway network security shooting range.