High temperature and high humidity is an unavoidable environmental condition of sports training and exercise. Recognizing the risk under high temperature and high humidity environment will help avoid the risk of sports injury accident under such environment. This paper through the literature analysis, qualitative analysis and system analysis, to make out of identification, assessment and early warning on risk of sport under high temperature and high humidity environment. And, ultimately, to build an early warning system for movement risk under the conditions of high temperature and high humidity environment. Through this system, we may minimize or avoid the sports risk under conditions of high temperature and high humidity environment.