The node failure wave of the near infrared Internet of Things has an important impact on the network connection reliability. In order to improve the security protection of the near infrared Internet of Things, a node failure wave impact analysis model based on link survivability traffic is constructed. Construct the behavior trust profile of the near-infrared Internet of Things nodes, weighted sum the subjective trust value, the objective recommended trust value and the past trust value, get the comprehensive trust value of the node behavior, and evaluate whether the node is ab- normal; Use node importance and load capacity to redistribute the failure load, build a node failure propagation model, and calculate the additional service load of random adjacent nodes. If it is higher than its own load capacity, the node has failure risk; Derive the link survivability according to the link duration and residual capacity, calculate the incom- ing traffic and failure wave impact probability of adjacent nodes, divide the node failure wave impact level, and obtain the node failure wave impact of the near infrared Internet of Things in different periods. The experimental results show that the constructed model can accurately describe the impact of node failure waves in different external environments of the near infrared Internet of Things, and provide reference for the stable operation of the near infrared Internet of Things.