Vaginal ultrasound is helpful in checking for pelvic inflammatory disease (pelvic inflammatory disease). Vaginal ultrasound can be used as a reference for the diagnosis of pelvic inflammatory disease, and imaging signs such as pelvic fluid or pelvic mass can be detected. In addition, when a woman suffers from pelvic inflammatory disease, usually the patient may have lower abdominal pain of different severity, aggravated by coitus and exertion, increased vaginal secretion, etc. In severe cases, the patient may even touch the mass and have pressure pain. Women should pay attention to personal hygiene, and if they find pain in the lower abdomen or increased vaginal discharge, they should go to a regular hospital in time to have the relevant examinations conducted by a professional doctor, and then intervene in the treatment after a clear diagnosis.