Sitting on the penis will flow unknown liquid, may be contact stimulation, prostatitis, urethritis and other factors, should avoid contact stimulation, the existence of disease factors, should be reasonable medication for treatment. 1. contact stimulation: men sitting, frequent contact stimulation, such as watching some bad books or videos, will lead to the penis with unknown fluid, should avoid frequent contact stimulation, distraction, can be improved by themselves, do not need to carry out other treatments. 2. Prostatitis: excessive sexual life, poor hygiene and other factors, may induce prostatitis, can cause urinary dribbling, will make the penis with unknown liquid outflow, usually white liquid, accompanied by perineal distension, urinary frequency and other symptoms, after diagnosis, you can follow the doctor’s instructions to apply tamsulosin, amoxicillin and other drugs for treatment. 3. Urethritis: such as gonococcal or non-gonococcal urethritis, may be related to unclean sex, will lead to the urethral opening area often white or yellow purulent secretions, accompanied by urethral burning sensation, urinary frequency and other symptoms, can be prescribed by the application of sensitive antimicrobial drugs, such as ciprofloxacin, levofloxacin and so on. Sitting on the penis discharge of unknown fluid may also be caused by other factors, requiring different treatment methods. It is recommended that patients go to regular hospitals in time for treatment and strive for early recovery.