Catheter urination to finish urination, sometimes there is white liquid discharge may be related to prostatitis, filariasis, pyelonephritis and so on. It is recommended that the patient go to the hospital in time to clarify the cause of the disease and treat the cause. 1. Prostatitis: patients may have symptoms such as frequent urination, urinary urgency, painful urination, and white discharge from the urethra after urination and bowel movement. It can also be accompanied by high fever, chills, nausea, vomiting and other systemic symptoms. 2. Filariasis: Filariasis in the late stage of the disease can appear in the urine is milky white, mixed with blood is pink. May be accompanied by cold, fever, waist, pelvic and inguinal pain and other symptoms. Sometimes the urethra can be blocked, making urination difficult. 3. Pyelonephritis: patients may have chills, fever, headache, frequent urination, discomfort in urination, lumbar pain and other symptoms. Some patients may have white discharge after urination. Catheter urination to finish urination, sometimes there is white liquid discharge suggests that the patient promptly go to the hospital, clarify the cause of the disease, the cause of the treatment.