Abstract:In order to understand the communication mode of network information under meteorological disaster,1 387 365 messages around the keyword typhoon Lekima collected from Weibo during August 4 to 20, 2019 were analyzed. Results showed that:(1)the development trend of typhoon Lekima event in Weibo was prominent. The event burst out on August 10, 2019,after the typhoon landed,media attention rose rapidly,pushing the development of the matter to a high point. Ordinary users were the major group of event communicators,People's Daily and CCTV News were the opinion leaders of this event;(2)the word "typhoon Lekima" were mentioned more than 6 million times,and related hot words were mainly about name,time,disaster,relief, media,figure and emotional words. Hot words on Weibo reflected the focus of public opinion in typhoon process,helped decision-making departments to recognize the disaster information and monitor the occurrence and influence of typhoon;(3)"Love" was the most widely used emoticon,reaching 168 471 people,and 74% of netizens expressed their solidarity,concern and prayer for the affected areas,and there were fewer negative emotion or views. Then,using Laswell's 5W mode in communication,an information communication mode based on analysis above and historical typhoon cases was constructed,to reveal the basic patterns and laws of its development and provide strategy of public opinion guidance,which will provide reference for the public service and government decision-making.