Log anomaly detection method and device, equipment and medium

The invention discloses a log anomaly detection method and device, equipment and a medium. The method comprises the steps of obtaining at least one log to be detected; querying a log template corresponding to each to-be-detected log according to each to-be-detected log; for each to-be-detected log, performing data extraction on the to-be-detected log and the log template corresponding to the to-be-detected log to obtain at least one first parameter item in the to-be-detected log and parameter data corresponding to each first parameter item, the second parameter item in the log template corresponding to each first parameter item of the to-be-detected log and the template data corresponding to the second parameter item are acquired; and for each first parameter item of the to-be-detected log, comparing the parameter data corresponding to the first parameter item with the template data corresponding to the second parameter item corresponding to the first parameter item to obtain log abnormal data of the to-be-de