A review is presented concerning the importance and the progress of group psychotherapy. On the basis of his personal experience with analytical group psychotherapy, the author makes an appraisal of the most important methods which have been used, reviewing the most representative contributions of the repressive, didactic, psychodramatic and psychoanalytic methods. The psychoanalytic method is considered along two different orientations: a) in which the psychotherapist's interpretations are aimed at the individuals of the group; b) in which the interpretations are directed to the group as a whole, that is, as a dynamic unit. The majority of the authors reviewed register favourable therapeutic results, reporting at least changes or disappearance of symptoms. However there has not been any conclusive study reporting deep and lasting personality changes. As to the mode of action of the different methods, the following can be said: in the repressive and didactic methods one can readily see that inconscient conflicts are not taken into consideration, which means that these methods do not touch the true origins of neurotic symptoms; the therapeutic action of the psychodrama as it is now conceived, is difficult to appreciate, deserving further studies through an appraisal from the point of view of psychoanalytical experience. In the psychoanalytic method of group therapy the technical instrument through which one attempts to obtain the desired changes is the transferencial interpretations, as it is in individual analysis. However, the author stress the difference between the two mentioned orientations describing the inconveniences of the one in which the interpretations are aimed predominantly at the individuals in the group. The author concludes that the other orientation, in which the interpretations are directed to the group as a whole, is the only one that is adequate to the management of clinical situations and offers more effective therapeutic possibilities. The author also suggest that the psychotherapist's motives for giving interpretations to the individuals in the group is an attitude of defense (counter-transference) against anxiety arisen in him by involving action of the group.