Hello,, your song is having condition called phimosis (unable to retract foreskin on glans penis) . No need to worry it's not a uncommon condition in male child. If it's mild then Treatments may include: gentle daily manual retraction several times daily or topical corticosteroid ointment application. If it's serious like baby is not able to pass urine at all,, then it may affect kidney because of back pressure of urine on kidney or due to infection from stagnant urine. Then surgery (circumcision) is the only choice - this surgery is a simple, most of times safe procedure which involves removing of foreskin, which permanently cure phymosis, now a days people are undergoing this procedure in western countries by choice as a eugenic procedure and it avoids few disease of penis later in life. Consult a general surgeon and determine whether your kid need the procedure.