Intrauterine anechoic means that when ultrasound is performed, there is no area of echo in the uterus, which is mostly considered to be due to pregnancy, uterine cysts, intrauterine fluid, and blood in the uterus. If a woman is pregnant, the examination is too early and the gestational sac has not yet formed, an area of intrauterine echogenicity may also be present during the ultrasound examination. In addition, if the patient develops intrauterine cysts and intrauterine fluid accumulation, it can show up as no echo in the uterus when ultrasound is performed. Moreover, if the blood in the uterine cavity is not discharged after delivery or abortion, the uterine echogenicity will also appear. It is recommended to take a blood test for human chorionic gonadotropin level to determine if the anechoic uterus is due to early pregnancy. If it is due to pregnancy, no treatment is needed. If it is caused by a disease, appropriate measures should be taken under the guidance of a doctor.