According to many foreign studies, the degree of anxiety in students with Asperger syndrome is significantly higher than the normal children, and even the same as patients with anxiety disorders. Therefore, this article mainly discuss from the psychological perspective to care that the behavioral and emotional problems in students with Asperger syndrome are probably owing to anxiety. Firstly, I probe into the causes of anxiety in terms of the characteristics of Asperger syndrome. Secondly, I introduce Functional Assessment which can analyze the anxious behaviors and then find out the causes. Finally, aiming at the causes of anxiety, I recommend some intervention programs to prevent and cope with anxiety in students with Asperger syndrome, and then reduce their behavior problems. In the end, I hope those programs will be helpful for other teachers.