White discharge from the urethra may be caused by non-gonococcal urethritis, chronic prostatitis, filariasis and other diseases. 1. Non-gonococcal urethritis: this disease is mainly caused by Chlamydia trachomatis, Mycoplasma genitalium and other pathogens other than gonococcus infection, can be transmitted through sexual contact. Symptomatic people will appear urethral stinging, painful urination, urethral discharge and other symptoms, presenting the urethra with white thin liquid. 2. Chronic prostatitis: the etiology of the disease is unclear, and may be related to mycoplasma, viruses, fungi, trichomonas and other pathogenic microorganisms. Common symptoms include frequent urination, incomplete urination, weak urination, etc. When some patients urinate, there is a small amount of white secretion coming out of the urethra. 3. Filariasis: The occurrence of this disease is related to the parasitization of human body by filarial worms, and the main way of transmission is biting. Usually, for advanced patients, because of the emergence of celiac disease, there will be white discharge from the urethra, and there will also be fever, back pain and other symptoms. There are many causes of white discharge from the urethra, and patients need to go to the hospital in a timely manner to determine the exact cause.