The invention belongs to the technical field of financial investment risk management. The invention discloses a financial investment risk management method and system based on big data analysis. The financial investment risk management system based on big data analysis comprises a management account registration module, a financial data acquisition module, a main control module, a data encryptionmodule, an investment risk assessment module, a business processing module, a transaction control module, a management authority setting module, a big data analysis module and a display module. Through the service processing module, the problem that when a user uses the financial terminal, large potential safety hazards exist is effectively solved, and the safety and confidentiality of user information are improved; and meanwhile, various parameters are flexibly adjusted and configured through the transaction control module according to the supervision requirements of the internet electronic account, so that the flexibility and security requirements of internet finance are met, the security controllability of the internet finance is ensured, and the application range and security are improved.