Autism is a complex neurodevelopmental disorder that continues through-out one`s life. It is accompanied by deficits in all areas of development particularly functional linguistic performance. Child`s interest in music gives music therapy a great importance to reduce such deficits. The present study aimed at enhancing functional linguistic performance among children with autism by developing and administering a music therapy program, examining its effectiveness, and effect transfer after administration and throughout the follow- up period. Participants were 10, 6- 8 year- old- children with autism from Zagazig devided into two equal and matched groups; experimental and control ones. Experimental method was used, and tools administered were Stanford- Binet intelligence test, autism DSM- V scale, GARS- III, functional linguistic performance scale, and music therapy program. Results revealed the effectiveness of music therapy on enhancing functional linguistic performance among children with autism. It was concluded that music and its components could be used for behavior modification among those children because of their interest in music. Keywords; autim, functional linguistic performance, music therapy.