Childhood depression is an emotional disorder in children, which is related to a variety of factors such as personality characteristics, upbringing, family education style, and major life events, etc. Its manifestations can be broadly classified into three types, and early detection and intervention will facilitate the recovery of children. Acute seizures This type of children often have obvious life stimuli before the onset of the disease, such as the sudden death of a parent, an accidental disaster, or leaving parents due to hospitalization. These children are mentally normal before the onset of the disease, but after the stimulus, they obviously show symptoms of depression, such as tears all day long, slow movement, low voice, loss of appetite, weakness, insomnia, nightmares, losing weight, often alone, not interacting with other children, and sometimes showing a sense of despair. This group of children often has a history of separation from their parents or other traumatic experiences in the past, and there may be no major sudden triggers before the onset of the disease. These children have poor adaptive skills before the onset of the disease, and their depressive symptoms gradually worsen, manifesting as timidity, fear, easily frightened, misbehavior, decreased academic performance, and light sleep. The child’s behavioral withdrawal, indifferent expressions, possible anorexia and suicide attempts are usually detected during professional examinations. This type of depression is often quite subtle, masking other problems such as disobedience, hyperactivity, obstinacy, defiance, irritability, aggressiveness, lack of discipline, learning difficulties, impulsivity, or other undesirable behaviors. Physical and mental problems such as headache, vomiting, abdominal pain, diarrhea, anorexia or over-eating, and incontinence may also occur. These children need professional treatment to detect the essential problem. Depression may not be obvious, but some children may periodically show symptoms of depression.