Infusion of a lot of reasons for not urinating have insufficient body fluids, kidney disease, cardiac failure and so on. The following specific analysis: First, insufficient body fluids, if a nausea, vomiting, diarrhea patients, at this time due to large amounts of water loss caused by insufficient body fluids, at this time, although a lot of infusion of patients still urinate less or do not urinate. Second, kidney disease such as renal failure, if the patient has renal failure, the loss of the function of the kidneys to produce and excrete urine, at this time, although a lot of fluids, but the kidneys do not have urine discharge, the patient will have swelling, elevated blood pressure and other symptoms. Third, cardiac failure, patients with cardiac failure and other diseases, although the infusion of a lot of but the heart ejection function is weakened, the amount of blood back to the heart is reduced, the patient will appear edema, urination, or even urinary and other conditions.