Fuente: Wipo "BigData" The invention relates to the technical field of big data, in particular to a community online intelligent analysis system based on health big data, which comprises an information acquisition module, an analysis module, a grade judgment module, a decision making module and a dynamic adjustment module. The information acquisition module is responsible for collecting health indexes, life styles and environment data of community members and acquiring historical data; the analysis module predicts a disease risk index, calculates a green coverage rate and analyzes an influence coefficient of an environmental factor on the risk index; the grade judgment module calculates a risk score grade; the decision making module makes an initial prevention strategy according to the risk level; and the dynamic adjustment module monitors the health indexes and the environmental data in real time, and adjusts the initial prevention strategy according to the real-time data. According to the invention, through intelligent analysis and management, the accuracy of community health risk assessment and the effectiveness of countermeasures are improved, and the health level and disease prevention ability of community members are improved.