In order to deal with the safety hidden trouble caused by that the nodes in wireless sensor networks were lack of fixed infrastructure and it was hard to check the malicious behavior of the nodes

so the conception of nodes’ trust was proposed combined with swarm intelligence optimization algorithm. It introduced nodes’ trust as a allocation strategy of pheromone

which was similar to a reliable and secure label of MPLS

so as to set up the reliable and secure route

re- move the malicious nodes from the network

and provide reliable and secure wireless sensor network environment. Simulation experiments show that it can effectively resist the wormhole attack

which is lack of effective methods to re- sist at present.