We are no strangers to autism, but how much do we know about the characteristics of autism? I believe that many people do not know much. Today we will focus on understanding what are the typical special of autistic children. Autism is a serious disorder of physical and mental development, most common in children. Autistic children are devoid of joy and pain, not deaf but deafened, not blind but blind. They close themselves in a separate world, unwilling to understand others and not be understood. Their typical characteristics are as follows: 1. Most autistic children have retarded intellectual development compared with children of the same age; a few autistic children have normal or near-normal intelligence, but some of them are surprisingly good in one aspect of their intellectual activities. 2, autistic children language barrier is more prominent, it is very difficult to normal language communication, that is to say, autistic children, usually do not like to say live, and even some children do not speak all their lives, even if the words will speak will use a limited vocabulary, but also often do not want to speak and would rather can gesture instead. 3, autistic children’s hobbies less, behavior stereotypes repeat, unwilling to change the environment, they can play a game for a long time, repeat to do a thing, once the environment changes will be restless. 4, autistic children do not want to socialize with others, like to leave the group, and do not want to communicate with others, only want to live in their own world, but also have no desire to socialize with others. 5. Autistic children do not have the desire and ability to learn and imitate like other children. 6. Most autistic children have sensory abnormalities, such as a special preference for or fear of certain sounds or images, or a dulled sense of pain. These are the typical characteristics of autistic children, once appeared is the need to take the child to the hospital in a timely manner to consult the treatment, must not be delayed. Nowadays, the number of autistic children is increasing, but it has not attracted the attention and understanding of the society and families, thus delaying the best time for treatment.