In the early stages of pregnancy, the causes of abdominal distension: one situation due to the embryo has just landed in the uterine cavity to grow and develop the uterus will be enlarged, soft, women will appear abdominal distension. The second situation in the early stages of pregnancy due to the body of the hormone progesterone increase nausea, vomiting, will also appear in the abdomen, such as gastrointestinal dyspepsia reaction. In the third case, when a woman has a multiple pregnancy or a hyperemesis gravidarum, abdominal distension may also occur. If it is caused by the first and second cases, women can pay attention to rest, eat light and easy to digest food can gradually relieve bloating. If it is caused by the third situation, gynecological ultrasound, blood tests, such as blood HCG can be diagnosed, women should pay attention to proper rest after pregnancy, eat a nutritious diet, regular life, but also regularly do obstetric examination, early detection of abnormalities.