Women’s menstrual period before the appearance of abdominal pain for more reasons, need to be accurately diagnosed, the common causes are as follows: 1, endocrine disorders: women’s endocrine disorders, nervousness, anxiety and other adverse emotions, which in turn triggered the symptoms of abdominal pain; 2, estrogen, progesterone fluctuations: women’s body estrogen, progesterone fluctuations in the body of the large, may be triggered by the abdominal organs, abdominal tissues, abdominal mucous membranes congestion, bruising, abdominal pain symptoms; 3, cold: menstrual period before the women’s physique is weaker, the lower limbs, the abdomen is easy to be cold, aggravating the pain in the abdomen.