When pregnant women experience itchy tummy during pregnancy, it may be caused by the following factors: First, it may be caused by the breakage of muscle fibers in the abdomen due to the enlargement of the uterus in the middle and late stages of pregnancy, causing stretch marks and thus itchy symptoms. Second, it may be caused by herpes or eczema on the skin of the abdomen during pregnancy, causing itchy symptoms and blister-like changes on the abdomen. Third, it may also be a symptom due to papular dermatitis during pregnancy, but clinically this factor is relatively rare. Fourth, it may be caused by cholestasis. In addition to itchy skin on the abdomen, pregnant women may also have itchy skin on other parts of the body. When a patient has symptoms of itchy skin on the abdomen, it is recommended to go to the hospital for relevant examinations to clarify the cause, and if it is caused by stretch marks, it does not need to be treated.