Aiming at problem that wireless sensor networks（WSNs） data gathering features easy lead to network congestion

a congestion adaptive multipath routing algorithm is proposed

combined with improving defect of mechanism of multipath establish and selection of AOMDV.Firstly

relevant factor mode is introduced in the new agreement to build a path set with minimal mutual interference; secondly

establish path congestion information collection

update mechanism

and use the HELLO message to transmit.Eventually source node adaptively selects the lower congestion path to avoid congestion by real-time sense path congestion information.Simulation results show that the improved protocol can effectively improve packet delivery and reduce end-to-end delay.