There are no special requirements for the patient’s diet after cardiography, as long as it is light, unless the patient has serious digestive tract diseases. Patients can choose easily digestible foods such as millet porridge and rice, and eat easily digestible vegetables, and try to eat less eggs, meat and other foods with high protein and fat content, which can easily cause gastrointestinal discomfort. In addition to food after cardiac imaging, you must drink more water and urinate more. It is required to urinate more than 1500ml within 24 hours after cardiac imaging to promote the excretion of contrast agent and drink more water. If there is heart failure to moderate the amount of fluid control, do not drink too much water to prevent the induction of heart failure.