Daily insomnia is not necessarily evidence of depression, but depression is often accompanied by insomnia. Insomnia is defined as not being able to sleep for more than 20-30 minutes of bed rest, or having dreams all the time at night, waking up easily or waking up early in the middle of the night. The phenomenon of insomnia, which may be due to environmental factors and psychological stress, is not important because normal people also experience insomnia. However, if sleep is normal every day and occurs for 2-4 weeks in a row, it is necessary to consider whether there are other conditions, such as bad mood, upset and negative, and to consider the possibility of depression. You can ask the patient to do a scale, usually a quality assessment scale or other assessment scale, to determine whether the insomnia is caused by depression, and only after the comprehensive evaluation can we consider whether it is depression.