Hidden stomach pain in mid-pregnancy may be caused by gastrointestinal factors, false contractions, pre-miscarriage, etc., which need to be treated by medication, adequate rest, and timely fetal preservation. 1. Gastrointestinal factors: if there is gastritis, intestinal cramps and other conditions will be manifested as stomach pain, can be treated by acid-suppressing drugs such as omeprazole. 2. False contractions: As the fetus grows, the uterus will gradually increase in size, and the space for the fetus to move around will be limited, which will make the uterus more sensitive and easily cause false contractions, which can be relieved by resting sufficiently at this time. 3. Pre-eclampsia: If there is abdominal pain accompanied by vaginal bleeding and other conditions, there may be pre-eclampsia, at this time you need to use progesterone and other methods of fertility preservation treatment. Mid-pregnancy stomach pain, through appropriate rest can not be relieved, showing a persistent trend of aggravation, and accompanied by abdominal pain, should be early to consult a doctor, after a clear diagnosis of the causes, under the guidance of the doctor symptomatic treatment and conditioning.