Abstract: With the rapid development of computer information technology in China, the network public opinion system has received more and more attention in the field of Internet, but there are still many problems in the management of network public opinion in China, the most concentrated problem is the imperfect response mechanism. In view of this, this study first describes the connotation of Floyd algorithm, describes the operation steps of Floyd algorithm, proposes the control strategy based on Floyd improved algorithm, analyzes the application and model of Floyd improved algorithm in network public opinion, and focuses on three factors affecting network public opinion monitoring technology. Finally, the relevant data published by ***.com and  are used as public opinion hot data to verify and compare the proposed model algorithm. The results show that the improved algorithm based on Floyd is significantly better than other algorithms in various indicators, but when the experimental array reaches a certain upper limit, the reuse rate limit still appears. It is hoped that this study can provide some help for our government to strengthen the analysis of Internet public opinion, to achieve the ability to respond to social emergencies, and to improve the public opinion management ability of government agencies in the Internet environment.

Key words: network public opinion, Floyd algorithm, optimization, monitoring, agent