The term “Tai Chi” has been referred to as a “moving meditation”(Chen, 陳怡 靜，2001; Su, 蘇清標，2003,and see the review in Kessenic, 1998). And Tai Chi Chuan is an ancient Chinese martial art which was developed concordant to Tai Chi thoughts in the late Ming (1368-1644) and early Ching (1644-1911) dynasties and is commonly taken as ethnic treasure of Chinese people, including its self defense value and great philosophy (Hsu, 徐必友，2000; Yie, 葉偉，1997).
The philosophy of Tai Chi Chuan derived from Tai Chi thoughts which are discovered by some ancient Taoists, and they discovered being circular and empty are the basic features of the natural environment. Therefore, the philosophy is concordant to its actual practice, for example, each Tai Chi Chuan movement is circular and concealed variations and changes, being empty and full at the same time. (Yie, 葉 偉，1997; Li, Hong, Chan, 2001). Besides, Tai Chi Chuan philosophy also teaches its participants to keep mental and physical practices moderate and emphasizes the value of allness (Yie, 葉偉，1997; Hsu, 徐必友，2000). Thus, Tai Chi Chuan practice put highly emphasis on concordance in movement, mind, and breath (Yie, 葉偉，1997).
Moreover, it also considers some contrary attributes often exist at the same time, for example, softness and strength, fake and virtuality, move and quiescence, nothingness and allness, (Su, 蘇清標，2003; Yie, 葉偉，1997), and all of the philosophy influence actual practice of Tai Chi Chuan.
In addition to the contrary concepts, Tai Chi Chuan is also a type of martial art that especially stress on the “whole” concept, it regards that body and mentality should cooperate because they both influence each other. Thus, keeping physical body and mentality concordant is the way to make the “whole” better (Chen, 陳怡靜，2001;
Hsu, 徐必友，2000; Su, 蘇清標，2003), and some literatures have also revealed that keeping physical body and mental status stable is also an important feature of Tai Chi
Chuan (Chen, 陳怡靜，2001; Tai, 戴旭志，2000; Hsu, 徐必友，2000; Yie, 葉偉，
1997). Moreover, some literatures also articulated that Tai Chi thought is also helpful for pursuit of mental serenity (Hsu, 徐必友，2000; Kessenic, 1998; Su, 蘇清標，2003;
Yie, 葉偉，1997). Hence, some people often find the abundant philosophic inspiration in the practice of Tai Chi Chuan, and it is commonly believed that practicing Tai Chi Chuan may make people become more cultural and increase wisdom (Hsu, 徐必友，
2000; Chen, 陳怡靜，2001, Su, 蘇清標，2003).
Beside philosophic inspiration, Tai Chi Chuan has also been proved to be a kind of martial art that is able to make people healthier. Originally, Tai Chi Chuan was created for the use of self defense, but over time, the emphasis in Tai Chi evolved to the modern focus on slow, graceful and precise body movements designed to enhance well-being and health. Today, the focus in Tai Chi is on a stable body environment and a symbiosis of the mind and body (see the review in Kessenic, 1998).
There are a plenty of benefits in Tai Chi Chuan practices, it has been verified that continued practice of Tai Chi strengthens one's vital energy and consequently reduces the potential for serious illness, and Tai Chi creates an environment of focused energy and increased awareness of one's breathing, flexibility, muscle control, and balance (see the review in Kessenic, 1998).
Some western medical studies argued that Tai Chi Chuan practice is pretty good for the old people to prevent from falling (Gallagher, 2003; Gorman and Bjerklie, 2002; Kessenic, 1998; Li, Hong, and Chan,2001) because it can help the elder people improve their muscles. Thus, people can strengthen their muscles, improve their stability of physical body and make themselves to keep balanced while taking exercise by practicing Tai Chi Chuan, especially for those old people whose bones and muscles are too fragile to burden their weight (Gallagher, 2003; Gorman and Bjerklie,
1997; Yang, 楊軍，1997).
Besides, some studies have supported that to practice Tai Chi Chuan is also helpful for lowering blood pressure in older adults nearly as much as moderate-intensity aerobic exercise for its slow and relax movements. Some other studies also revealed that to lower High blood pressure also reduces a risk factor for stroke and heart attack (Derrick,1998; Gallagher, 2003; Li, Hong, and Chan, 2001;
Tang and Ma, 譚永洁，馬彥君，1997; Taylor and Froelicher , 2004; Yang, 楊軍，
1997). Some researches also mentioned about the effect Tai Chi Chuan help enhance cardio-respiratory fitness. Continuous Tai Chi Chuan practice can help people have better control of their hearts, and make the heart rate lower to strengthen their heart (Derrick,1998; Gallagher, 2003; Li, Hong, and Chan, 2001; Tang and Ma, 譚永洁，馬 彥君，1997; Taylor and Froelicher , 2004; and see the review in Tai, 戴旭志，2000).
Meanwhile, previous researches on Tai Chi Chuan practitioners have also argued the positive effects on immune system, lowering anxiety, flexibility, mental and emotional control, digest system, and physical reactions for Tai Chi Chuan is a type of sport that especially emphasize on the cooperation of each part of body (Derrick,1998;
Gallagher, 2003; Hsu,徐必友，2000; Li, Hong, and Chan, 2001; Su, 蘇清標，2003;
Tang and Ma, 譚永洁，馬彥君，1997; Taylor and Froelicher , 2004; Yang, 楊軍，
1997; and see the review in Tai, 戴旭志，2000).
To sum up, Tai Chi Chuan has already been proved to be beneficial for people to increase their physical fitness, including muscle and skeleton development, improvements of immune system, digest system, flexibility, etc. And it also does good to mental health like diminishing of anxiety and emotional control. Also, the abundant of philosophy do attract people to practice to pursue mental serenity and some other meanings in human life. And what cannot be forgotten is the self defense benefit of its martial art feature.