Wireless sensor networks（ WSNs） is an important part of the Internet of things（ IoT）

in practical applications

it is expected to provide privacy preserving and integrity protecting in accurate data aggregation. So

a new integrity of data fusion protection algorithm is proposed

on the basis of adding privacy seed to node acquiring data in order to preserve privacy

by using the imaginary unit and real unit of complex numbers show nonlinear relation

to effectively achieve the integrity of information identification. Performance analysis and simulation results show that under the premise of lower data communication cost and computation overheads

the algorithm can handle various attacks of adversaries

and provide more efficient and more reliable data integrity protection.