The onset of mental illness is very complex. The cause has not been completely revealed

and it is always accompanied with somatic symptoms. Physical and psychological are commonly in comorbidity. The concept of comorbidity means that diagnosis and treatment of mental disorders cannot rigidly adhere to one dimensional thinking. It is good to try to consider both of physical and psychological factors

and understand the phenomenon of psychiatric comorbidity comprehensively. However

some shortcomings and confusions in this area have yet to be solved. This paper draws the reasonable elements from the system of TCM mental diseases

and provides some useful reference for the research of modern psychiatric disorders.