Language and communication barriers
Autistic children have serious language and communication barriers. Most preschool autistic children can't understand their parents' words and deeds, unlike normal children, which have the significance of learning and imitating.
A special way of playing.
Autistic children also have something special in playing. For example, they don't play with others, but with their own. Moreover, they play differently from others and care about different points.
Early treatment and education
Effective early treatment has several factors: First, the earlier you start treatment, the better. Because autism ignores people, he has no motivation to learn by himself, so if you teach him early, his blank time will be shorter. Also, the earlier you start teaching, you can avoid some weird behaviors. The second factor is density, which is to teach him well. Teach him intensively and continuously every day, and he will make progress. The third is: teaching methods should be coherent and continuous.
Fixed behavior
Autistic children also have some behaviors that belong to "fixed" rituals and are easy to observe. For example, eating only fixed food, sitting in a fixed place to eat, sleeping in a fixed place, covering a fixed quilt, watching fixed programs at a fixed time, wearing a certain brand of underwear, sitting in a fixed seat by car, and taking a certain route when going out, but there are also fixed phenomena in language, thinking and communication, such as asking parents to answer fixed questions in a fixed way.