A case of congenital hypothyroidism in 7 month old infant was presented. This baby was admitted because of growth retardation, feeding difficulties, and constipation. We diagnosed this case by clinical features as well as thyroid scintigram, X-ray survey for bone age and skeletal maturation and biochemical studies. The patient was treated with desiccated thyroid, but was died of intercurrent infection on 20th hospital day. The review of literature was made briefly.