Down syndrome is a extra or partial copy of 21st Chromosome . These chromosome is called TRISOMY. Down syndrome is the life long disability .According to National Down Syndrome Society (NDSS) in 700 children there is one who are born with Down syndrome. Types of down syndrome are Trisomy 21 , Mosacicism , Tranlocation. Sign and Symptoms of Down Syndrome are , they have flat face , open mouth, poor muscle tone, , bulging eyes and tongue, short height , etc .ROLE of SPEECH THERAPIST , Through THERAPY program we work on their Self help skills, Oral motor skills, Sensory skills , Speech and Language and cognitive skills etc.