A girl in her 20s with an enlarged abdomen and no symptoms usually needs to see a gynecologist. Ultrasound can be used to determine if there is an organic mass in the female pelvis, and CT of the abdomen or pelvis may be needed to confirm the diagnosis. Generally speaking, the enlargement of a woman’s abdomen is due to the physiological enlargement caused by pregnancy. After pregnancy, the uterus will gradually grow and exceed the pelvis, resulting in the enlargement of the abdomen. If there are no symptoms, we cannot rule out malignant tumors in the abdominal cavity or benign fibroids in the uterus, so we need to go to the gynecology department for consultation and examination to clarify the cause of abdominal enlargement as soon as possible. If the patient’s abdomen becomes significantly enlarged within a short period of time, the patient should go to the hospital for examination and diagnosis in a timely manner. If there is no symptom, you can first go to the general outpatient clinic for examination, and in addition to gynecology, you can also go to gastroenterology, hepatology, general internal medicine, general surgery and other departments for routine examination, so as to clarify the cause as soon as possible according to the guidance of the professional doctor and the individual situation for targeted treatment.