If the pain in the belly is caused by placental factors, it may be combined with vaginal bleeding, frequent fetal movements or reduced fetal movements, consider placental factors such as placental abruption, etc., and carry out symptomatic treatment; 2. If the pain in the belly is caused by acute abdominal conditions, such as acute appendicitis, it needs to be treated for If the pain is not very severe, the patient can tolerate it and there is no combination of fever and other symptoms, conservative treatment and anti-inflammatory symptomatic treatment can be taken; 3. If the pain in the small stomach is caused by enteritis, it may be combined with diarrhea, nausea, vomiting and other symptoms, you can first use the whole intestine and other drugs for treatment, if there is no relief then take other measures. Therefore, mid-pregnancy belly pain needs to be treated for the cause.