The invention discloses a method and device for analyzing a power utilization behavior of a user. The invention aims to provide a power utilization behavior analysis method and device which adopt a distributed database, are high in computation speed and can monitor in real time. The method comprises: acquiring power utilization information of a user in a set duration in advance; according to a preset rule, processing the power utilization information, and generating a user behavior label, wherein the user behavior label is used for setting a safety power utilization range of the user; establishing a distributed label database, and storing the user behavior label in the distributed label database; acquiring power utilization behavior data of the user in real time; comparing the power utilization behavior data with the user behavior label stored in the distributed label database; according to a comparison result, determining whether the power utilization behavior data exceeds the safety power utilization range of the user or not.