The invention discloses a stream computing immediate processing system based on Storm. The system comprises four parts, wherein a first part is that data is accessed into the part to obtain data froma front-end business system; the second part is a most important Storm real-time processing part, the data is accessed from an access layer, and the data is transmitted into a data landing layer afterreal-time processing; the third layer is the data landing layer, and the part appoints a data landing way; and the fourth part is a metadata manager. Through the investigation and survey of practicalbusiness requirements and algorithm research, a data processing rule base which meets the practical business is met, and a basic event is efficiently detected in real time according to an event modelpredefined by the user until all basic events which form an event model are detected. The system is suitable for processing complex analysis and calculation which has an extremely high instantaneityrequirement on a data stream which conforms to power grid business data features, and a purpose that data analysis speed is quickened and the real-time analysis and calculation is realized can be achieved.