1.Physiological reaction: the fetus is larger in late pregnancy, resulting in pain caused by pulling on the uterus and uterine ligament, which is simply a slight tingling pain on the right side of the stomach and can be relieved after changing the position, without other discomfort symptoms. Physiological reaction during pregnancy, it is recommended to change the sleeping position; 2. Pseudo contractions: Tightening of the belly with tingling on the right side in late pregnancy, the pain is light and heavy, short in duration, irregular, not accompanied by vaginal bleeding symptoms, can be considered as pseudo contractions. Pregnant women should pay attention to rest, learn regular breathing to relieve pain, and not stimulate the abdomen in general. If the abdominal pain is strong, it is necessary to go to the hospital immediately; 3.Production: If the tingling sensation appears first on the right side of the stomach in late pregnancy, followed by a regular increase in pain and accompanied by a small amount of vaginal bleeding, it can be considered as contractions in labor, and the pregnant woman needs to go to the hospital for delivery with the escort of her family; 4.Digestive system diseases: such as acute appendicitis, pressure pain and rebound pain in the right lower abdomen during examination, antibiotics can be applied for anti-infection treatment, and surgery is needed if necessary. Surgical treatment is needed if necessary.