A child’s failure to urinate may be caused by drinking too little water, urinary tract infections, urinary tract stones and other reasons. 1. Drinking too little water: If the child’s water intake is too low, the child’s exercise is relatively large or sweating more in summer, it may lead to the child’s water quantity is insufficient, and the situation of not urinating. 2. Urethral infection: If you don’t pay attention to local hygiene in normal life, resulting in inflammation of the urethra, inflammation stimulation will occur in the case of urinary pain, resulting in children do not dare to urinate. 3. Urethral calculi: If a child has urethral calculi, the urethral calculi cause blockage to the urinary tract, resulting in urine can not be discharged, the child does not urinate. Drink more water in normal life, pay attention to local hygiene, if necessary, go to the regular hospital in time to identify the cause of the disease, under the guidance of professional doctors to take targeted treatment.