Attention-Deficit Hyperactivity Disorder (ADHD) is one of children's most common neural behavioral disorders. Due to the various situations of ADHD child, the method which the doctor adopts in treating ADHD will also be adjusted on the basis of demand for the case. One of the main reasons is that an ADHD child has not only various potential risk factors from individual, family and/or school, but also is heavily comorbid .On the other hands, the personal characteristics of parent will influence the conditions of ADHD child and/or the comorbidity. According to the aforementioned multiple indicators and multiple causes (MIMIC) problems, we will try to use the structural equation modeling (SEM) method to conduct the causal relationships among them. The results will help the children psychiatrist to establish an effective treatment plan for each ADHD child.