It is located at the midpoint of the transverse popliteal stripe, which means that when we bend our legs, the back of the knee, which is the most medial point of the depression, is the Zhizhong point. This point can be used clinically to stimulate the acupuncture points, which can be beneficial for improving diseases and symptoms, such as headache, urinary discomfort and back pain, bedwetting and enuresis in elderly patients, stimulating the acupuncture points to improve libido in young adults, and indirectly making the breasts beautiful in women. The clinical application of the acupuncture points can significantly relieve tendons and channels, cool the blood, disperse blood stasis and activate blood circulation, and clear heat and detoxify the body.