A lot of foam in the male urine is a normal phenomenon, can disappear within a few minutes, the specific causes of the foam, can not be generalized. The cause of male urine foam is often divided into physiological and pathological reasons, physiological reasons such as semen or prostate fluid mixed into the urine, resulting in a large number of urine foam; secondly, after a large number of alcohol, due to the influence of alcohol metabolism, can also lead to increased foam, the above cases do not need special treatment, can gradually recover. Pathological causes such as pyelonephritis, prostatitis, urethritis, cystitis, diabetes mellitus, etc., generally need to be analyzed and diagnosed through urine routine, urinary ultrasound, liver function, biochemistry and other examination items, and according to the condition of the treatment. If there is a large amount of foam in the urine with other discomforts, pathological factors need to be considered, and it is recommended to go to urology and nephrology in time.