The presence of self-harming behavior is not necessarily depression, but may also be caused by disorders such as bipolar disorder and borderline personality disorder. If a depressed person develops self-harming behavior, it is medically determined to be major depression based on the SDS (Depression Self-Rating Scale) and clinical presentation. The presence of self-harming behavior in depressed patients indicates that the patient is in a dangerous situation and should be treated with medication and psychotherapy in the hospital as soon as possible. When taking medication, you should follow the doctor’s prescription, take the medication regularly, do not change the dosage at will, and actively cooperate with the doctor for regular follow-up. In psychotherapy, you should open your heart and give full trust to the doctor, improve your self-awareness and self-identity, fully recognize your value, and avoid self-harming behavior. If self-harming behavior is not caused by depression, but by bipolar disorder, borderline personality disorder and other diseases, you should go to the hospital as soon as possible for treatment to improve your condition and avoid serious consequences. In addition, family members should also give full understanding and support in life, pay more attention to mood changes, improve the patient’s mood by enhancing communication and communication, and reduce the appearance of self-harming behavior. They should also maintain a positive attitude, keep positive energy and learn to find the goodness and beauty in life.