The causes of postpartum abdominal pain are as follows: 1, the presence of inflammation in the body, complicated by infection, after childbirth need to diligently change underwear underwear, pay attention to hygiene, should use clean and disinfected tissue; 2, the discharge of postpartum dew; 3, uterine contraction can produce pain, generally three days to a week can be gradually relieved, if a week after the pain is still obvious and unbearable, you need to go to the hospital to investigate whether there is infection or myoma; 4, the uterine substance is not completely shed. . Abdominal pain after delivery is obvious should go to the hospital.