Network security state evaluation method and server

The invention relates to the field of network security evaluation, and provides a network security state evaluation method and a server, which are used for solving the problems of low evaluation accuracy and low evaluation credibility, and the method comprises the following steps: obtaining a network security state data set in a set historical period from a blockchain, wherein the network security state book comprises at least one index representing the network security state; according to the parameter of each index in the network security state data set, determining evaluation correlation and weight of each index; performing security state evaluation on the network based on the evaluation correlation and the weight of each index, and storing an evaluation result in the block chain through a consensus node on the block chain. By analyzing the network security state data set, performing security state assessment on the network and storing the assessment result in the blockchain through the consensus node on t