Depression is a common psychological disorder, mainly manifested by low mood, decreased interest, pessimism, slow thinking, lack of initiative, self-blame, poor diet and sleep, fear of suffering from various diseases, feeling unwell in many parts of the body, and in severe cases, suicidal thoughts or behaviors. Depression is the disease with the highest suicide rate in psychiatry. Depression is so prevalent that almost 2 out of every 10 adults suffer from depression, which is why it is called the mind cold. Depression has now become the second most important global disease causing a serious burden to human beings, causing suffering to patients and their families, and causing damage to society that is unmatched by any other disease. The main reason for this situation is the lack of proper understanding of depression in society, and social prejudice makes patients reluctant to go to psychology departments. In China, only 5% of depressed patients have received treatment, and a large number of patients do not receive timely diagnosis and treatment, and their condition deteriorates, even with serious consequences of suicide. On the other hand, due to the lack of knowledge about depression among the public, people with depressive symptoms are mistakenly considered to be in a mood and cannot give due understanding and emotional support, which causes more psychological pressure on patients and further worsens their condition.