Chronic suppurative otitis media (CSOM) is a common ear disease in developing countries. The complications of CSOM have a unique set of clinical signs and symptoms. This study aimed to identify the profile of dangerous type CSOM patients at H. Adam Malik General Hospital Medan in 20062010. A descriptive study of 119 patients in 2006 - 2010. From 119 patients, 28.57% were found in 2010, 31.93% were at age between 11 - 20 years old, 53.78% men and 38.66% were at right ear. 68.91% due to a history of recurrent otitis media and 61.34% with a main complaint of draining ears. The most clinical symptoms and signs were aqueous ears (76.47%) and tympanic membrane perforations (74.79%), as attic perforation (0.84%), marginal (1.68%), subtotal (23.53%), and total (48.74%). The most hearing impairments were conductive deafness (58.82%). In Schuller projections, 62.18% were found the imaging of chronic mastoiditis with cholesteatoma. From the culture results, 21.01% were Pseudomonas aeruginosa. 86.55% were mastoiditis complications. The profile of dangerous type CSOM patients at H. Adam Malik General Hospital Medan is similar with the other profile of dangerous type CSOM commonly.