Psychotherapy for depression is of clinical significance, especially for patients with mild depression, psychotherapy is the treatment of choice. Clinical treatment for depression with evidence-based medical evidence is cognitive-behavioral therapy, cognitive-behavioral therapy, the main core essence of cognitive-behavioral therapy is the understanding of the thing itself is the most important factor leading to mood, the view of the thing determines its own mood, and the mood drives the behavior, therefore, in the process of evaluating the thing will produce mood, will further drive the behavior. Thoughts, emotions and behaviors are interconnected and closely related to each other. By improving the irrational and distorted beliefs of depressed patients and adjusting their behaviors, the symptoms of depression can be improved to a certain extent, so cognitive-behavioral therapy is especially recommended as a treatment for patients with mild depression in the clinic.