Hematuria after heavy drinking is mostly related to capillary dilatation, acute urinary tract infections, urinary stones and urinary tract tumors. 1. Capillary dilatation: alcohol in the human body will produce the effect of dilation of capillaries, if the bladder area of the capillaries thus lead to a large number of dilatation, it is possible to appear after drinking blood in the urine performance. 2. Acute urinary tract infection: alcohol will stimulate the urinary system, may induce acute urinary tract infection, resulting in hematuria. 3. urinary stones: when the existence of urinary stones, after drinking alcohol to stimulate urination, the stones may cause damage to the mucous membrane, and the urine further stimulate the local blood vessels, resulting in hematuria. 4. Urological tumors: when benign or malignant tumors appear in the kidney, ureter and bladder, drinking alcohol may stimulate the mucous membrane to cause bleeding and hematuria. If the patient after drinking a lot of alcohol hematuria, it is recommended to go to the regular hospital in a timely manner, improve the examination to clarify the cause of the disease, under the guidance of the doctor to give targeted treatment or treatment.