The postoperative results of the chronic otitis media might be controlled by using proper operative procedures. In this study, a total of 71 cases of chronic otitis media were studied retrospectively to gather the prognostic factors in the chronic otitis media. Of all these cases, the intact canal wall mastoidectomy and tympanoplasty were operated or the patients with normal tympanic mucosa showed, statistically, a higher statistical improvement of the middle ear space and postoperative hearing. In cases of normal middle ear space, the postoperative middle ear spaces were maintained and the hearing results were significantly improved. When both of these factors are present, the tympanic mucosa and middle ear space, it produces the most significant predictive value, more than any other single factor in the evaluation of the postoperative results. In cholesteatomatous chronic otitis media, we found that the postoperative results were significantly worse in the middle ear space and for hearing ability. Another significant factor used to predict postoperative results was the destruction of the lateral attic wall. However, the status of protympanum evaluated by a surgical microscope was not related to the postoperative middle ear space and hearing results. Nor did the size of the tympanic membrane perforation affect the results. In summary, the preoperative tympanic mucosa and middle ear space were significantly important in predicting the postoperative results. However, the patency of the eustachian tube by Valsalva maneuver, status of the protympanum, and the size and location of the tympanic membrane perforation were not statistically significant as a prognostic factor.