Taijiquan has the function and effect of harmonizing qi and blood, balancing yin and yang, and dredging meridians and channels. Taijiquan is one of the traditional health care methods in China, a sport created according to yin and yang, and it achieves the purpose of harmonizing qi and blood, balancing yin and yang and dredging meridians and collaterals by guiding qi with intention. Practicing taijiquan can make the heart qi strong, regulate breathing, and fill up the qi, blood and meridians, so as to make the veins and channels fluent, promote metabolism, and achieve the effect of health maintenance. Although practicing taijiquan has many benefits, it should be exercised moderately according to one’s own condition, and it is not suitable to exercise for a long time for patients with knee joint diseases. If necessary, it is recommended to go to regular hospitals for consultation and treatment under the guidance of professional physicians.