The invention discloses a dynamically configured big data analysis system and method. The system includes a real-time data storage management module, a real-time flow analysis and calculating module, an off-line analysis module, and a visualization module. At least one assembly capable of performing dynamical configuration management is arranged in each module, for example, a data management configuration assembly, a real-time flow analysis and calculating configuration assembly, an off-line analysis and calculating configuration assembly, and a dynamic configuration assembly. The invention further provides a dynamical configuration method of the big data analysis system. A data structure and an information structure of each module are designed, and a calculating method of warning redundancy and a dynamic configuration method are provided through the dynamic configuration of a state information driving system of a warning data structure in a dynamic configuration manager. According to the invention, the system can run at an efficient big data analysis and calculating level, and the optimization process of big data analysis platform management is effectively solved.