Common causes of enuresis in children include: delayed cortical development, deep sleep, psychological factors, genetic factors, educational and training factors, and organic diseases. 1. Delayed cerebral cortex development: it can lead to the child’s bladder is full, but the brain can not give the command to inhibit urination, which makes the child involuntary contraction of the bladder, resulting in the manifestation of enuresis. 2. Deep sleep: when urine fills the bladder, sleep is too deep, at this time, the cerebral cortex will be in a state of inhibition, unable to receive the bladder full command, and then control the bladder to urinate, resulting in involuntary contraction of the bladder, resulting in the performance of enuresis. 3. Psychological factors: If the child is always in anxiety, fear, depression, nervousness and other adverse psychological, may contribute to the child’s enuresis, or even form a habit. 4. Genetic factors: If both or one of the child’s parents have a history of enuresis, then the probability of the child suffering from enuresis will be relatively high. 5. Education and training factors: If parents train their babies to urinate too early, but at this time the baby’s cognitive and language comprehension is still immature, and can’t withstand the complexity of the urination training, but will cause the baby’s urinary disorders and urinary retention. 6. Organic diseases: if the baby exists urethritis, cystitis and other urinary system diseases, can also lead to the phenomenon of enuresis, in addition to the emergence of urinary urgency, urinary pain and other symptoms. In short, there are many reasons why children lose urine, it is recommended that if there are symptoms of discomfort in a timely manner to consult a doctor, a clear diagnosis and targeted treatment.