Causes abdominal often similar to menstrual cramps for more reasons, as follows: 1, inflammation: if the pain occurs from time to time or uterine spasmodic contraction, may be related to inflammation. At the same time combined with increased leukorrhea, painful sex, back pain and other symptoms, belong to the typical annexitis, pelvic inflammatory manifestations. Patients need anti-inflammatory treatment, such as Chinese herbs to activate blood circulation and remove blood stasis. Chronic inflammation may take a longer time to treat, although hidden pain, but may gradually aggravate, need to pay attention and active treatment; 2, pregnancy: some women during pregnancy, especially early pregnancy, easy to menstrual cramps-like abdominal pain, but milder and no bleeding, no need to worry too much; 3, mental factors: if the abdominal pain is not serious, no sensation of daily life or no pain after going to sleep, it may be related to mental factors Related. No obvious other discomfort symptoms can be observed without special treatment.