Distributed network space asset surveying and mapping method

The invention provides a novel cyberspace asset surveying and mapping method based on a knowledge graph. A current cyberspace asset surveying and mapping system has the problems that asset information synchronization is not timely, equipment positioning and identification are inaccurate, false equipment is not thoroughly removed and the like. Therefore, the improvement of the cyberspace asset surveying and mapping system should pay more attention to the development of the direction which is beneficial to deep mining of cyberspace asset information and provides reliable information support for network information security protection. An improved network topology discovery technology is adopted, network topology information in a local area network is obtained, an intelligent selection algorithm is used, seed nodes are selected from topological nodes according to network connection information of the nodes to be responsible for asset surveying and mapping in a proper range, the surveying and mapping nodes detect