Depression self-assessment scale is able to reflect the patient’s subjective symptoms and objective performance of the scale is very simple and clear, as long as the intelligence is normal, are able to measure, the scale is divided into four grades, the score of 53 points or less is normal, 53-62 points belong to the mild depression, 63-72 points belong to the moderate depression, more than 73 points belong to the severe depression. For patients with moderate and severe depression, medication, psychotherapy, physical therapy and etiologic treatment are needed. For patients with mild depression, psychological counseling, self-adjustment and other treatments can be taken.