If the urine becomes lighter in color after drinking alcohol, it is generally normal, but if the color of urine becomes milky white after drinking alcohol, it is generally not normal. 1. The color of urine becomes lighter and whiter: due to the increase of water intake by the body after drinking, the urine is diluted and the color of urine becomes lighter and whiter, which is generally normal. 2. urine color milky white: urine becomes milky white may be caused by prostatitis, the prostate gland has inflammation after the secretion of more prostate fluid mixed in the urine presents milky white, can improve the urine routine, prostate fluid and other tests to clarify the diagnosis. When the color or character of urine changes after drinking, it is recommended to consult a doctor in time to check the urine routine, so as to achieve early detection and early intervention.