Weird and rigid behavior is also an important feature of autistic children. Some children wave repeatedly without purpose? Hands, running and spinning, clapping your hands, these actions have no purpose. But the most terrible thing is that some autistic children will have self-injury and self-harm, and have repeated minor actions such as picking their nostrils, biting their lips, licking their mouths and sucking; ? Seriously, it will scratch your body and hurt yourself; More seriously, it will lead to epilepsy in children.