Hematuria is possible after drinking, hematuria after drinking, considering that it is caused by alcohol stimulation or urological diseases. 1. Alcohol stimulation: the human body after the intake of alcohol, alcohol into the bloodstream will lead to capillary expansion, especially after a large number of alcohol, resulting in edema and congestion of the mucous membrane of the kidneys, but also will cause capillary rupture, in this case may appear hematuria. 2. Urological diseases: hematuria may also be caused by urinary system diseases, the human body itself may have urinary stones or tumors and other diseases, under the stimulation of alcohol, excessive urination, and even urine color change. At this time it is necessary to check the urinary system for problems. Hematuria should be taken seriously, actively go to the hospital, it is recommended to further improve the examination to clarify the condition, and follow the doctor’s instructions for treatment.