As wireless sensor network proposes a new low-energy adaptive clustering hierarchy (LEACH) protocol for wirelesssensor networks that use a distributed cluster formation based on affinity propagation (AP). By using Distributed cluster formationgenerate Cluster. The proposed LEACH protocol (LEACH-AP) enables a fully distributed control and resolves practical limitations ofconventional LEACH-based protocols by simplifying network functionalities. The results show that the proposed protocol outperformsexisting LEACH-based protocols considerably in terms of network lifetime, energy dissipation rate, and total number of transferredbits. The main idea is to formulate the WSN setup into median-based clustering, which guarantees the center of a cluster to be amember of the cluster, and to learn the optimal cluster number adaptively according to network topology. In this system we are usingK-means algorithm for cluster formation. Wireless sensor networks (WSNs) are subject to energy management for maximizing theirlifetime. The result sending acknowledgement and data so require low energy and time for that operation.