Abdominal ultrasound can detect diseases of the digestive system, urinary system and gynecology.1. Diseases of the digestive system, such as liver cysts, liver cancer, liver cirrhosis, liver ascites, pancreatitis, splenomegaly, gallbladder polyps, gallbladder stones and gallbladder cancer.2. Diseases of the urinary system, such as kidney cysts, kidney stones, kidney tumors, ureteral stones, bladder tumors, bladder stones, enlarged prostate, enlarged prostate, enlarged prostate, enlarged prostate, enlarged prostate, enlarged prostate, enlarged prostate, enlarged prostate and enlarged prostate.3. 3. gynecological diseases, such as uterine fibroids, adenomyosis, cervical cysts, bilateral adnexal cysts, teratomas, etc. If there are large tumors in the stomach and intestines, ultrasound can detect them, but for diseases such as gastritis, enteritis and ulcers, ultrasound does not show them and gastroscopy and colonoscopy are needed.