Treatment for studdering children
Our oldest son stuttered for a short time when he was younger. I consulted a friend who was a speech therapist and she said just to have him practice saying words. She also said that sometimes at that age (2-3 I think) their minds work faster than their tongue and they quiet often outgrow it. He did.
Depending on the age of your child, I would first consult your pediatrician and then based on their recommendation probably a speech therapist.