Endometrial defects can be determined by the endometrial line continuity of the three-dimensional negative ultrasound ultrasound feedback, and it is recommended to pay attention to the problem when it exists to avoid delaying the treatment. Usually endometrial loss is caused by abortion, drug induced abortion, etc. It can be determined by clinical examination, 3D ultrasound, etc. Through its 3D image display, it can usually determine whether there is endometrial loss or not. The three-dimensional image can also provide a better basis for determining whether endometriosis exists in the body. If the results of the three-dimensional ultrasound examination are abnormal, it is recommended to consult a doctor in a timely manner, to clarify the cause of the disease with the help of the doctor, and to carry out targeted treatment or therapy.