The effect of myringotomy versus Penicillin therapy in the treatment of patients with acute suppurative otitis media was compared. A third group of patients treated with both myringotomy and Penicillin was included in the investigation. Ten days after institution of the treatment there were significantly more days with secretion/bulging drum in the myringotomy group than in the two other groups. At this time Penicillin therapy was started also in those patients belonging to the myringotomy group. With this reservation the occurrence of such late complications as secretory otitis media and relapses was the same, independent of treatment. No cases of mastoiditis were observed.