Yongquan point, the sole point of human body, is located in the first third of the connecting line between the head end of the second and third toe seam and the heel, and in the depression in front of the foot, which is the lowest point of the whole body Shu point and the first point of the kidney meridian. Huangdi Neijing, the earliest existing medical work in China, said: "The kidney comes from spring, and spring is full of heart." This means that the qi of the kidney meridian is like the source water, which comes from the foot and pours out to irrigate all parts of the body and limbs. Therefore, Yongquan point plays an important role in human health, disease prevention, treatment and health care.