1, liver, biliary, adrenal, kidney examination: morning examination of the person forbidden breakfast (no high oil food, including milk, eggs, doughnuts) and water, the previous day less oil for dinner. The ban on meals: In addition to the ban on food, other foods such as pastries, fruit, candy and cigarettes should also be prohibited. 2, pancreatic examination: three days before the examination, all easily fermented foods, such as soy products, milk, pasta, etc. are prohibited. The day before the examination, eat a liquid food with little residue (such as thin rice) for dinner. Fasting and water fasting on the day of examination. Fasting requirements are the same as those for liver and biliary examinations. 3, obstetrics and gynecology, prostate, bladder and other examinations need to fill the bladder. (Drink more water, do not urinate) 4, heart, blood vessels, thyroid, breast and eye examinations do not need to be prepared before. 5, rectal and prostate examinations should be defecated before. 6, isotope and X-ray barium meal examination must be 3 days after the ultrasound examination.