The Beck Depression Inventory is a self-assessment scale to determine the degree of depression or depression. It is called a self-assessment scale in which the patient takes the scale and answers it by himself, and the result of the answer is compared with the reference result to determine his condition. The scale is divided into 21 items, and after the 21 items are answered, the answers are added up and the final score belongs to which part. 0-5 points belong to the degree of health, 10-15 points belong to the symptoms of mild depression, >15 points are called symptoms of depression, >25 points are called severe or serious depressive symptoms. Of course, the scale only serves as a preliminary judgment, if you judge whether you are depressed, you must go to a professional psychiatric department, and the doctor will determine whether you are depressed through a comprehensive mental state examination.