Abstract: To monitor terrorists爷threat information from microblog and to improve the aviation security efficiency, an early warning system of civil aviation terrorist threat information is proposed. Topic crawler technique is used to collect microblog information from internet and evaluate their threats level with sentimental analysis method. Data visualization technology is also adopted to show the information for civil aviation public security department. Operation results show that the system runs stably and has good warning performance, which can prevent unsafe events effectively.

Key words: civil aviation security, terrorist threat information, early warning, microblog, topic crawler, sentiment analysis