Autism, also known as autistic disorder, is a pervasive developmental disorder that is characterized by severe and pervasive impairments in several areas of development As a mental disorder, autism shows rigid and stereotyped behavior, interests, and activities. On December 24, 2007, the United Nations passed a resolution to designate April 2 as the "World Autism Day" starting from 2008. Children with autism live in their own world. Because of their innocence and loneliness, they are called children of stars. The beautiful name cannot conceal the difficult situation faced by children with autism and their families. They need more care and help from the society.