Boys bedwetting may be a physiological phenomenon caused by drinking too much water before bedtime, or it may be caused by uremia, pediatric urinary tract infections and other diseases. 1. Drinking too much water: If a boy drinks too much water before bedtime, when the sleeping bladder is full of time can not wake up, then there will be bedwetting, is a physiological phenomenon, do not worry too much. 2. Uremia: the occurrence of this disease is mainly related to neuroendocrine or renal dysfunction, including traumatic brain injury, meningitis, heredity and other causes. The patient will have a large amount of urination, irritability and other symptoms, due to the rapid onset of urosepsis, so when the child sleeps easy to wet the bed. 3. Pediatric urinary tract infection: this disease is mainly caused by pathogenic microbial infections, commonly found in Staphylococcus aureus, Escherichia coli, etc., which can be infected through the bloodstream, upstream, lymphatic and other channels. Affected children will have symptoms such as frequent urination, urinary urgency, enuresis and painful urination, which can be manifested as bedwetting. There are many other causes of bedwetting in boys, it is recommended to go to a regular hospital, if excluded is a physiological phenomenon, need to cooperate with the doctor active treatment, and strive for early recovery.