At present all kinds of security methods are used to solve security problems of WSNs (wireless sensor networks).Along with the development of Internet of Things

wireless sensors in sensing layer of Internet of Things will also be diversified.Therefore

according to the sensing layer's characteristics and its unique security problems of Internet of Things

we propose a trust evaluation mechanism based on energy monitoring to solve the security issues of sensing layer.Firstly

this paper establishes an energy monitoring mechanism of wireless sensors.Secondly

it uses the correlation coefficient method to calculate the data of energy monitoring and conclude the trust metric of sensors.Simulation results show that the trust evaluation method of wireless sensors proposed in this paper has higher accuracy.