If a 14-year-old boy appears to have a prolonged period of disinterest, depressed mood, is no longer interested in things that have already interested him in the past, and appears to be silent and without a sense of joy for a long period of time, it is necessary to pay high attention to whether the child has a tendency to depression. If once appeared, should actively to the hospital for medical treatment, the symptoms of early may show low mood, slow thinking, reduced conscious activity, is considered typical of the symptoms of major depression. Depression is typically characterized by significant and persistent low mood and diminished interest, and is a very common mental disorder. Suicide is the most serious consequence of depression, and some children may be suicidal. In fact, these typical symptoms are not found in all patients. Whether it is persistent low mood or emotional slowing of thinking and awareness, as well as somatic symptoms, they should be highly valued. Some children may be upset, worried, nervous, emotionally uncontrollable, etc., and experience a decline in cognitive function. If this occurs, it is important to actively seek medical attention. Children often have suicidal tendencies, and with early intervention, the cure rate is still relatively high.