Tummy cramps pain during pregnancy may be related to ligament pulling, contractions, pre-eclampsia, ectopic pregnancy and other factors, it is recommended to carry out targeted treatment according to the cause. 1. ligament pulling and contractions: due to the enlargement of the uterus, the ligaments around the uterus are pulled, as well as with the increase of the pregnancy week, can be physiological uterine contractions, can cause stomach cramps pain, these are normal physiological phenomena, no special treatment is needed; 2. pre-eclampsia. Tummy cramp pain accompanied by vaginal bleeding may be due to preterm miscarriage, which requires timely medical attention and fetal preservation treatment under the guidance of a doctor. It is generally recommended to take oral fetus-preserving drugs, such as dydrogesterone, etc. Progesterone can also be injected intramuscularly to preserve the fetus. The pregnant woman needs to rest immediately in bed and avoid strenuous exercise. After treatment, if vaginal bleeding stops and ultrasound examination indicates that the embryo is alive, the pregnancy can be continued, but if the symptoms worsen, it indicates that miscarriage is inevitable and the pregnancy needs to be terminated in time; 3. Ectopic pregnancy: if the stomach cramps and pains during pregnancy are located in one side of the lower abdomen, it may be due to ectopic pregnancy, which requires timely ultrasound examination to clarify the location of the pregnancy sac, and conservative treatment or surgery can be chosen according to the patient’s condition.