Plantar Yongquan acupoint is in the most concave position in the center of the foot when flexing the foot and curling the toes. It is the well point of the foot shaoyin kidney meridian, and its anatomical location is in the line between the webbing edge of the 2nd and 3rd toes of the sole of the foot and the heel of the sole of the foot, specifically in the depression at the intersection of the first 1/3 and the second 2/3 of the line between the two. The point of Yongquan has important therapeutic efficacy in clinic, it has the efficacy of opening the orifices to wake up the mind (opening the brain orifices, clearing the mind), nourishing yin and clearing away heat (nourishing the yin essence, clearing away the heat), descending the rebellious and opening the collaterals and can be used for treating a variety of diseases such as fainting, epilepsy, mania, dizziness, insomnia, hematemesis, sore throat, disorders of the two stools, and foot-heart fever. Yongquan acupoints must be operated by professional acupuncturists when performing needling operations to avoid blind self-operation and needling accidents.