Occasional milky urine in children may be caused by urinary tract infection, celiac disease, lymphatic vessel blockage and so on. 1. Urinary tract infection: after children urinate, if they are not cleaned in time for a long time, it may lead to urinary tract infection and produce a large amount of purulent secretion. When urinating, the urine is milky white and accompanied by symptoms such as urinary urgency, painful urination and frequent urination. 2. Celiac Disease: If children suffer from filariasis or obstruction of lymphatic reflux in the kidneys, it may also lead to a large amount of celiac material in the urine, which is milky white and accompanied by symptoms such as frequent urination, urgency and fever. 3. Lymphatic vessel blockage: when children have lymphatic vessel blockage around the kidneys, it will easily lead to lymphatic circulation obstruction, causing a large amount of lymphatic fluid can not be circulated normally, and there are a large amount of proteins in the urine, resulting in milky-white urine. Parents should take their children to the hospital immediately to investigate the cause of the milky color of the urine, and follow the doctor’s instructions for treatment after clarifying the specific cause of the disease.