White cloudy substance in urine may be caused by urinary tract infection, high alkalinity of urine and crystalluria. 1. Urinary tract infection: due to inflammation of the mucous membranes of the urinary system, a large amount of secretions into the urine, so that the originally clear urine turbidity, urine may produce white turbid material. 2. The alkalinity of the urine is too high: due to the alkalinity of the urine is too high, resulting in the precipitation of phosphate crystals in the urine, so that the urine has white turbidity. 3. Crystalluria: when the urine is too saturated with substances, and precipitated from the urine, manifested in white cloudy urine. However, there are usually no symptoms of urinary abnormalities, such as urinary frequency, urgency and pain. It is recommended that patients with symptoms of white cloudy matter in the urine, you can go to the hospital for routine urinalysis, after clarifying the cause of the disease. The doctor to cooperate with the correct treatment.