The purpose of this study was to probe into why to old people physically and mentally healthy effect it will be Taiji. Experimenter's questionnaire survey materials of park of Pingtong taking a sample by way of random sampling, in order to describe the effect physically and mentally healthy to old people that statistics and chi-square test and examine Taiji. The result shows: This research health aspect is in 1. Although body function has some effects, has not been expected to show the effect in the whole health state; 2. Some effects have appeared to the psychology, mood, activity time, body of the health in the whole psychological health state in the psychological health aspect. 3. In is it fall number of times reach level of showing, to improve old people quality of the life benefit to prevent.