Once a child is diagnosed with autism, rehabilitation and education are the accepted methods of intervention. Through rehabilitation and education, the child’s core symptoms can be improved, social interaction skills can be improved, basic life skills and learning skills can be acquired, and the child’s social adjustment ability can be improved and the quality of life can be greatly improved. Abnormal behaviors that interfere with access to education and training, social interaction, and harm to self can also be corrected through behavioral therapy. Cognitive-behavioral therapy can be used for older children who do not have significant intellectual impairment and can help them recognize their differences from their peers, their own problems, stimulate their potential, develop effective social skills, and maximize the patient’s prognosis. The application of family therapy can also enable the parents of the child to understand the problems of the patient, to support and collaborate with the treatment staff, and to participate fully in the treatment. For those with significant psychoneurological symptoms, or those who threaten their own or others’ safety, or those who seriously interfere with the patient’s access to education and rehabilitation training and affect their daily life, symptomatic treatment with medications can be used. Among them, risperidone and aripiprazole are drugs approved by the U.S. Food and Drug Administration for the treatment of irritability and behavioral disorders in children with autism.