The specifics of what is going on with the fluid coming out of the urethra are still based on the specific condition. Some people may be caused by physiological reasons, such as in the sexual impulse, will secrete some liquid, through the urethra outflow. It may also be caused by pathological reasons, such as urethral discharge of purulent liquid, such as urethritis, serious, especially for streptococcal infection, caused by urethritis, this purulent discharge is more. Active anti-infection treatment should be carried out. There are also some diseases, such as chronic prostatitis, can also be through the urethra outflow of liquid, especially after the stool, the outflow will be more obvious, showing milky white, or yellowish liquid.