Wireless sensor network is a collection of distributed tiny sensor nodes, which sense the natural phenomenon and transmits the sensed information to the base station using multi-hop communication. Most of the existing systems use the routing techniques which consume lot of energy during data communication. Hence, the energy of sensor nodes depletes and results in decrease its lifetime. To overcome the above limitation in this paper we propose a new routing technique called agent based fuzzy swarm optimization (FSO) routing technique which provides dynamic clustering and effective optimized routing. Because of this technique the energy of sensor nodes has been conserved and used effectively which ultimately increases the lifetime of the network. The proposed system has been implemented by using MATLAB and for correctness purpose the results are taken after repeated measurement. © 2017 IEEE.