The invention discloses an edge computing system, which comprises a device sensor, an edge wireless gateway, an edge server, a cloud computing platform, a cloud database and an application terminal, and is characterized in that the device sensor is used for transmitting a collected data signal to the edge wireless gateway and is connected with the edge wireless gateway; the edge wireless gateway is used for carrying out early warning on the collected data signal and transmitting the data signal to the edge server, and is connected with the edge server; the edge server is used for analyzing the collected signal and reporting the analyzed signal to the cloud computing platform; and the cloud computing platform performs calculation, diagnosis and early warning judgment on the data signals reported by the edge servers, sends the processed data signals to the application terminal, and stores a backup of the data to a cloud database at the same time. Compared with the prior art, the intelligent processing method of cooperation of the cloud platform, the edge gateway and the edge processor can be realized, and the problems of centralized data storage, occupation of a large number of storage resources, transmission delay and the like of the current cloud platform are solved.