Based on the meaning of the destructiveness implicit in theatre and psychological theory, this research is carried out on the therapeutic significance of the destructiveness made within the therapeutic process of dramatherapy and works to bring positive variation of the participants in utilizing the destructiveness through the dramatherapy cases of the participants having self-destructive tendencies. Once searching for the causes and responsibilities of the conflict and pain arising from the destructiveness from the outside, the emotional dynamics of doubt and anger against a subject occurs, and, as a result, it can be subjected to psychological or physical attack against it. Furthermore, if the direction of the destruction turns inwards, it can be caused severe psychological problems. Also, it can be appeared in a self-destructive behaviors seen in various somatoform disorders, including obsessive-compulsive behavior, drug overdose, eating disorders caused by depression or self-harm, suicide attempts, severe anxiety accompanied by shame and guilt.. Like good and evil are relative and conditioned, the destructiveness can provide an important opportunity to break down the individual moral stubbornness, flatfootedness, rigid and irrational thinking evading the recovery of the relationship and the possibility of change. The positive utilization of the destructiveness can work as a therapeutic intervention in the course of the dramatherapy aiming treatment of human mental health and social adjustment. That is, destructiveness may make the participants securely integrate the positive side of destruction by experiencing the planned process for the treatment purpose. Treatment process for the transformation of the self-destructive tendencies start from a clear recognition of the destructive emotions repressed in own's inner and the destructive desire against it. Through this process, participants are able to recognize the self-destructiveness, allow the destructive energy to stay in their consciousness, control and modify it. Therefore, the destructive process of action helps to clearly recognize the target and emotions and functions as changing the direction of the destruction from the inside to the outside. Dramatic space is the place where we can be accepted as our own like where an infant is received by his/her mother. Thus, without worrying about negative affect of destructive power, the participants can experience sufficient desire to pursue what they want. Through this process, away from excessive adhesion, they can understand objectively their problems and seek their solutions. Furthermore, sufficient fulfillment of the destructive desire can provide room to admit the gap between the desire of themselves and others, and it helps them open their eyes to the emotional truth of themselves and others, escape from excessive anxiety, and encourage to recover a healthy relationship based on trust with real person. In brief, the destructiveness in the process of dramatherapy can act to reconstruct by breaking up suppression and sticking of solid images. Consequently, it makes the participants recognize by switching over from the hostile relationship to the empathic and communicational and helps them healthily live by changing over from the energy wasted on unnecessary defenses and the negative destruction to the energy of the creation and reconstruction.