Frequent bedwetting in twelve-year-old boys may be caused by excessive water consumption, and may also be caused by enuresis, cystitis, prostatitis and other diseases, as well as other diseases such as urethritis. 1. Excessive drinking: the symptoms of frequent bedwetting in twelve-year-old boys may be caused by excessive drinking before going to bed, which will lead to the phenomenon of bedwetting when the patient goes to bed. 2. Enuresis: Enuresis is caused by a variety of factors such as heredity, delayed physical development, and psychology. Patients will experience symptoms such as enuresis, frequent urination, urinary urgency, difficulty in urination, and may also experience frequent bedwetting. 3. Cystitis: Cystitis is caused by bacterial, viral and other pathogenic infections, and the main symptoms of patients are frequent urination, urinary urgency and urinary incontinence. Therefore, twelve-year-old boys will have frequent bedwetting performance. 4. Prostatitis: prostatitis is caused by bacterial, viral and other pathogenic infections, patients will have urinary retention, frequent urination, painful urination and other manifestations, so twelve-year-old boys will have frequent bedwetting symptoms. 5. Other: other diseases such as urethritis and diabetes can also lead to the phenomenon of frequent bedwetting in twelve-year-old boys. Twelve-year-old boys often bedwetting may also be caused by other factors, if it is caused by drinking too much water, do not need to be treated, remove the causative factors can be; if it is caused by disease, parents should take their children to the hospital in a timely manner, and follow the doctor’s instructions for treatment.