Ultrasound suggests intrauterine dark area suggests review, may be early pregnancy, may be intrauterine blood or intrauterine fluid, for the ultrasound examination found in the abnormality, usually recommended to review the ultrasound again. In early pregnancy, after 35 days of menopause, after human chorionic gonadotropin>2000IU, the gestational sac can be seen on ultrasound in general, if the yolk sac can not be seen, and it is not clear that there is intrauterine pregnancy, ultrasound is often described as intrauterine fluid dark area, and it is recommended to improve the human chorionic gonadotropin, to clarify the status of the pregnancy, and pay attention to the rechecking of the ultrasound. In postmenopausal women, the dark intrauterine area on ultrasound may be due to accumulation of blood or pus in the uterus, and hysteroscopy can be performed if necessary, and the patient should receive active treatment. If the ultrasound indicates a dark area in the uterus, it is recommended to consult the obstetrics and gynecology clinic and decide on the next step under the guidance of a specialized doctor.