When irregular menstruation occurs during menstruation, one can press the Sanyinjiao. If a woman’s menstruation is normal during menstruation, pressing the Sanyinjiao point is not recommended. Irregular menstruation is a condition characterized by abnormalities in the cycle of menstruation and its duration, color, quality and quantity. This disease mainly includes early menstruation (early menstruation), late menstruation (late menstruation), and irregular menstruation (chaotic menstruation). Its occurrence is often related to the feeling of cold, dietary injury to the spleen, or emotional upset and other factors. Acupressure massage on Sanyinjiao points can strengthen the spleen, regulate menstruation, benefit the liver and kidneys, etc. It can treat spleen weakness, stomachache, abdominal pain, menstrual irregularities, menstrual leakage (excessive menstruation or dribbling), leucorrhoea (leucorrhoea abnormality), abdominal distension, impotence, enuresis, hernia, insomnia and other diseases. If a woman experiences irregular menstruation during her menstrual period, she can massage the Sanyinjiao point for relief. If a woman has normal menstruation when she is menstruating, pressure on the Sanyinjiao point is usually not recommended. Sanyinjiao is located at the posterior edge of the inner side of the shinbone, three inches above the tip of the inner ankle on the inner side of the calf. Whether or not a woman can massage the Sanyinjiao during her menstrual period needs to be determined on a case-by-case basis. If a woman experiences irregular menstruation, she can go to a regular Chinese medicine hospital to massage the Sanyinjiao point under the guidance of a doctor.