Based on the various principles of crisis intervention, a model of it is designed which divides it into four phases: (1) beginning of intervention (establishment of a relationship, assessment of the client’s condition, estimate of the gravity of the problem, and design of the plan of action along the lines of minimal difference); (2) actual intervention; (3) conclusion of the crisis intervention, and (4) follow-up. This system conveys a good insight into the activities of a crisis centre, and it can contribute to the difficult and up to now unsolved problem of how such institutions can be evaluate