The invention discloses an internet-of-things terminal multistage edge node active caching method. The method comprises the following steps: S1, predicting the movement probability of the nodes by adopting a first-order Markov model; s2, calculating an entropy value through the movement probability to measure the uncertainty of mobility prediction, and judging the pre-fetching and caching positions of the content in the network according to the entropy value; and S3, caching the content to the node in advance according to the judged next hop position of the node. By implementing the method, the uncertainty is reduced, the redundancy is eliminated, the high cache hit rate is ensured, and the performance of replacing the active cache is improved by increasing a small amount of delay.