There are possible causes of milky white liquid after urination: first, purulent urethritis or cystitis, when there can be white discharge in the urethra, mostly pus, with the completion of the urination action, the urethra closed when the secretion out of the urethral orifice, manifested as milky white pus, patients are accompanied by stinging pain in the urethra, urinary frequency, urinary urgency and other symptoms, the need for urine culture and culture of purulent secretions to further confirm the diagnosis The actual fact is that the actual actual fact is that the particular person is not a person. The second, male prostatitis can be at the beginning of urination or at the end of urination, the discharge of milky white viscous-like liquid, mostly prostatic fluid, patients are accompanied by frequent urination, urinary urgency, perineal area swelling and discomfort and other symptoms, need to carry out routine examination of prostatic fluid and culture examination to further confirm the diagnosis, and need to carry out ultrasound examination of the prostate. The third, sexually transmitted diseases such as gonorrhea or non-gonococcal urethritis, can appear urethral pain, urinary frequency, urinary urgency, accompanied by urethral secretion of white or yellow pus, most patients have a history of unclean sexual contact, need to carry out gonococcal, mycoplasma, chlamydia and other pathogens test to confirm the diagnosis.