If there is contact with a confirmed case in the community where it is located, then it will be verified and searched through big data to avoid unnecessary infections. Big data investigators investigated by the big number of confirmation is a dense receiver, is through multiple channels to collect data, the purpose is to weave a dense network of big data, cell phones will have GPS positioning information, and communication trip card, you have been to what will be shown, in addition to the combination of infrared measuring equipment and artificial intelligence, can quickly identify patients with fever. Internet companies have developed artificial intelligence-assisted diagnostic tools to improve diagnostic efficiency. Overall, big data technology has played a particularly positive role in the fight against the epidemic. Epidemic prevention and control work is intertwined, and big data screening is the most crucial part. Who has ever been to the risk area, for the staff of the big data scheduling special class, this is the work of every second, big data scheduling is the epidemic prevention and control of one of the most timely and effective means to quickly stifle the spread of the virus from the source.