Depression, when severe, may lead to self-injurious or suicidal behavior. It has one of the highest suicide rates in psychiatry. Depression is a mental illness caused by a variety of psychological, genetic, and social adaptation factors. It usually manifests itself in symptoms such as low mood, loss of interest, decreased energy, excessive self-blame, poor sleep, and excessive worry about one’s health. When the symptoms are severe, suicide or serious self-injurious behavior may even occur, and it is one of the diseases with the highest suicide rate in psychiatry. The peak age of depression is between 21 and 50, and the prevalence is significantly higher in the female population than in the male population. Phenomena such as conflicts between work and family, children, and marital breakups may cause an individual’s mood to take a huge hit, leading to the development of depressive disorders. When mild symptoms of depression occur, it is recommended that patients promptly under the guidance of professional psychologists, psychological counseling, to avoid serious, self-injurious, suicidal and other behaviors.