The human sacrum has eight degrees, that is, above the hip and below the abdomen, and the left and right are the upper jaw, the auxiliary jaw, the middle jaw and the lower jaw, which are collectively referred to as the "eight-claw point".

Traditional Chinese medicine believes that dysmenorrhea is caused by poor circulation of qi and blood in uterus. According to the principle of "general principle is painless", it is necessary to regulate qi and blood, warm meridians and remove blood stasis.

Massage method:

When lying prone, the family should rub the part with the palm root to achieve the degree of heat penetration, which can adjust the uterus from the outside to the inside and relieve the pain.