My baby is 1 year 3 months old now...his saliva comes out every time... what should I do to stop ??

Hey, Babies do drool so there is nothing to be worried about. It is normal in first two years. Actually, the muscles of the mouth are not fully developed in the infants and they do not have full control over swallowing until they are between 18 and 24 months old. Babies also drool when they are teething.