SCL90 is a symptom self-rating scale with 90 main questions also called 90-item symptom scale, which can effectively check whether patients have anxiety problems, depression problems, and obsessive-compulsive problems. Therefore, this scale is more used in clinical practice and can effectively screen common psychiatric and psychological problems, especially in the diagnosis and assessment of the severity of psychological problems such as depression, anxiety, and obsessive-compulsive disorder. In addition, this scale is a self-assessment scale, which means that one can see the final psychological problem and the severity of the current psychological problem by choosing the option that best fits one’s symptoms in combination with one’s own performance.