Hepatobiliary-pancreatic color ultrasound drinking water usually affects the test results. Drinking water for hepatobiliary-pancreatic-spleen ultrasound usually affects the test results. Drinking water will cause gas to build up in the patient’s stomach, and when the ultrasound is performed, the ultrasound wave encounters the gas buildup and is difficult to reflect and project an accurate image of the organs, affecting inaccurate results of the hepatobiliary-pancreatic ultrasound, and the patient should make a new appointment for the hepatobiliary-pancreatic ultrasound test. In addition, drinking water may also cause the gallbladder to contract, resulting in the inability to see the image inside the gallbladder during the ultrasound examination. Hepatobiliary and pancreatic ultrasound should pay attention to the night before to stop drinking water, the examination needs to be performed on an empty stomach, while the day before the examination diet should be light and easy to digest food, such as millet porridge, noodle soup, steamed buns, bok choy, celery, etc., to avoid greasy food such as fried skewers, oil sticks, twist, etc., and to avoid excessive exertion. It is recommended to follow the doctor’s instructions for preparation before the test to avoid affecting the test results.