Abnormality detection method and device, electronic equipment and storage medium

The invention provides an anomaly detection method and device, electronic equipment and a storage medium. The method comprises the steps that after a current data sample is received, a core micro-cluster belonging to a previous data sample in a buffer area is transferred to a memory, an outlier micro-cluster belonging to the previous data sample in the buffer area is deleted, and the previous data sample is a data sample different from the current data sample; after the outlier micro-cluster belonging to the previous data sample in the buffer area is deleted, the outlier micro-cluster in the current data sample is stored in a target buffer area, and other micro-clusters in the current data sample are stored in a memory; anomaly detection processing is carried out on the micro-clusters in the memory, target outlier micro-clusters and target macro-clusters in an abnormal state in the memory are determined, the target macro-clusters are determined according to global density and local density threshold values, t