Fuente: Wipo "BigData" The invention discloses a financial examination and approval data monitoring system and method based on big data, and relates to the technical field of power supply data supervision. Historical financial examination and approval data is subjected to project type division to obtain data applied and submitted currently, and the data is matched with the divided historical data to accurately calculate the type risk value of the application data; the financial approval risk is calculated in a targeted manner, and the scientificity and rationality of risk management are ensured. An approval risk sliding window is set, real-time monitoring and dynamic adjustment of financial approval risks are achieved, fluctuation of approval data can be captured in time, abnormity can be recognized, approval requirements can be adjusted, and therefore the flexibility of an approval process and the effectiveness of a risk control strategy are improved; and comprehensive risk calculation is provided in combination with the type risk value and the department association risk value. The automatic decision not only improves the efficiency and consistency of financial examination and approval, but also reduces the workload of manual examination, and ensures the uniformity and fairness of financial examination and approval standards.