After chemotherapy night urination is particularly high may be physiological factors, diabetes, drug factors and other causes. 1. Physiological factors: Generally, chemotherapy drugs are injected into the patient’s body through intravenous drip. In order to ensure the blood circulation of the kidneys, reduce the adverse effects of chemotherapy, and speed up the metabolism of the drugs, doctors usually dilute the drugs with saline or sugar water, so it is a normal phenomenon to urinate especially much at night after chemotherapy. 2. Diabetes: When patients have diabetes at the same time, due to impaired renal function, renal blood vessel blockage, the sugar content in the patient’s blood is higher, and osmotic diuresis occurs. Therefore, it is possible that particularly high nighttime urination after chemotherapy is caused by diabetes mellitus. 3. Drug factors: the drugs used by patients in chemotherapy have a certain degree of irritability, which will stimulate the submucosal nerves of the bladder and increase bladder sensitivity, leading to particularly high nocturia after chemotherapy. In addition, other conditions can also lead to particularly high urination at night after chemotherapy, you should go to the hospital in time for examination, after clarifying the cause of the disease, under the guidance of the doctor for appropriate treatment.