Vaginal ultrasound is short for vaginal ultrasound, which can detect follicles, early pregnancy, and diseases such as benign or malignant tumors of the uterus. During the examination in a regular hospital, the doctor will sterilize the end of the ultrasound probe and put on a disposable latex cover, sterilize it again and perform the examination. At the end of the examination, the latex cover will be removed and thrown into the medical waste collection box, and the probe will be sterilized again. It is changed 1 time per patient to block cross infection between bacteria and patients. In addition vaginal ultrasound examination, disposable hip pads will be placed on the patient’s buttocks, and the doctor will wear disposable film gloves when operating, so there is no cross-infection in regular hospitals. Cross-infection is mainly caused by sexual intercourse, swimming, taking a bath in a public place or soaking in a hot spring, etc. Therefore, it is recommended to avoid the above behaviors after the vaginal ultrasound examination, and to go to the hospital for checkups and treatments if infections occur. To have a vaginal ultrasound, you must be married or sexually active, avoid menstruation, avoid sexual intercourse, and do not need to wash your vagina or hold your urine before the examination.