According to the expert questionnaire investigation,the arena risks in China\'s large-scale track and field events is concluded as five major risk sources:environmental risks,management risk,field and equipment risks,technical risks and personnel risks.

The author uses list method to identify the competition risk of Chinese female trampoline athlete in the paper,and uses AHP-FUZZY model to evaluate athlete competition risk,and uses SWOT matrix to get strategies of risk.

It is well known that there exists the variety of competition risks when theadvanced athletes take part in the international competition.

In order to strengthen the management of table tennis coaches court style and manners,IITF has revised its rules several times and has stipulated the new measures for punishment.

Analysis market risk of PVC through prosperity period;

The study of financial market risk measurement by VaR model;

Analysis of telecommunication products market risk of China mobile corporations;