The main causes of frequent urination in three-year-old children, a little at a time, include the following: first, symptoms due to urinary tract infections. If a child has a urinary tract infection, it can cause symptoms of frequent and urgent urination, and the urethral opening = is also red. When the child is given a urine test, the presence of white blood cells in the urine routine = requires the child to be given timely anti-infection treatment, such as the application of Bazhensan or Cefixime. Secondly, symptoms caused by having a neurogenic bladder. If a child has a neurogenic bladder, it can also cause the symptoms of frequent urination and a little bit at a time, but as the child gets older, the symptoms of neurogenic bladder will slowly ease. If it is very severe, children can also be temporarily relieved by applying Cuscuta.