The pain is caused by non-organic lesions, but also by digestive system diseases, urinary system diseases, reproductive system diseases, which need to be treated after clarifying the cause. 1, non-organic diseases: cold, improper diet and other factors can lead to gas and pain in the small abdomen. Eating too much hard, indigestible, or potatoes, onions, such as gas-producing food, so that the gas stays in the stomach and intestines, which in turn leads to flatulence, abdominal pain. At this time, the abdomen can be properly massaged to promote exhaustion. In addition, should avoid getting cold, can drink more warm water, avoid overeating; 2, digestive system diseases: such as radical dry colorectal syndrome, etc.. Due to the change of intestinal movement, resulting in abdominal pain, constipation and diarrhea symptoms alternately. In this case, treatment should be carried out according to the symptoms shown. If the symptoms are constipation, oral laxative drugs can be taken under the guidance of professional doctors, and if the symptoms are diarrhea, anti-diarrheal drugs such as montelukast should be taken for treatment; 3. Urinary system diseases: such as urinary stones, in addition to gas and pain in the abdomen, there are also symptoms such as frequent urination, urgent urination and painful urination. Under the guidance of professional doctors, oral lithotripsy granules, drinking a lot of water and skipping rope can be used for conservative lithotripsy. If the symptoms are severe, you will need to receive lithotripsy for treatment. More water should be drunk in daily life to prevent stone generation; 4. Reproductive system diseases: If the patient is female, in addition to gas and cramping pain in the small abdomen, accompanied by abnormal vaginal discharge, consider the possibility of reproductive system diseases, such as pelvic inflammatory disease. In this case, it is necessary to go to the hospital in time and treat according to the cause and severity of the disease. It is recommended to drink more water and pay attention to warmth and personal hygiene to help recovery.