There are many factors to cause sports injuries to the ball players. To prevent and solve the problems of sports injuries effectively, the research method of the investigation, statistics, and analysis about the factors is important. It's a practical and reliable research method for the researchers to observe the relationship between the training situation and the factors that cause sports injuries on the scene. This research was a contrast comparison between the datas recorded during the training time and from the questionnaire survey. The result showed that the research method of the questionnaire survey was easy to miss some information because of ex-post facto research and couldn't provide precise statistical datas.