Four-year-old girl urine flocculent, the main consideration is pathological factors such as congenital malformation of the urinary system, urinary tract infection, stones and so on. 1. congenital malformations of the urinary system: congenital malformations such as congenital duplication of the kidney, duplication of the ureter, stenosis of the pelvic ureteral junction, etc. may cause an increase in epithelial shedding, resulting in flocculent material in the urine of a four-year-old girl. 2. Urinary tract infection: after infection, the bacterial reproduction in the urinary tract can cause an increase in the shedding of epithelium in the urine, accompanied by an increase in the number of leukocytes in the urine, which can be manifested as a flocculent material in the urine of a four-year-old girl, but also accompanied by urinary urgency, abdominal pain, urinary frequency and other symptoms. 3. urinary stones: such as ureteral stones, kidney stones, etc., can cause flocculent in the urine of a four-year-old girl, accompanied by fine particles of material discharged together, can also be accompanied by symptoms of pain in the affected area. Four-year-old girl urine flocculent, there may be other reasons, it is recommended to go to the hospital in a timely manner, improve the examination to clarify the cause of the disease, under the guidance of the doctor to give targeted treatment or treatment.