Abstract: In order to improve the data security management quality of the FAO train control system and to enhance the security confidence of the system deployment, a system security information flow model is constructed from the perspective of information flow. With information security flow accident cause theory, model analysis is conducted. Trackside static data security management is of great significance to the overall safety of the whole train control system. The defects of the existing data management methods are proposed from four dimensions. Python is used for verifying the software and realizing design optimization from the four dimensions.