Most of the 3 year old children’s prepuce is physiological, with age the foreskin and glans will be separated, if not separated, can then be circumcised. 3-year-old children due to the younger age, the penis has not yet developed, at this time most of the circumcision belongs to the physiological circumcision, generally do not need treatment, with the growth of age the foreskin and glans will gradually separate, the circumcision will also improve. If the symptoms of phimosis do not improve with age, then surgery can be performed again for treatment, such as circumcision. Daily attention should be paid to penile hygiene, regular cleaning, to avoid the episodes of phimosis caused by the prepuce, you can often turn up the foreskin, to help the glans show.