In Taiwan, the magnitude of the interior decoration design industries is relative small, to introduce the professional manager to increase the profitability of the company are very rare. This research aims to select a proper interior decoration professional manager by the Analytical Hierarchy Process (AHP) combined Taguchi loss Function, AHP combined Technique for Order Preference by Similarity to Ideal Solution (TOPSIS) and Fuzzy TOPSIS, respectively. Thirteen criteria associated with the selecting a proper interior decoration professional manager reaching consensus by fuzzy Delphi method (FDM). The weightings of 13 criteria have been obtained from the analytical hierarchy process (AHP). Three methods are used to determine the rankings among three interior professional managers. In the method of AHP combined Taguchi loss Function, the smaller the weighted Taguchi’s loss values, the better are the order of the interior decoration professional managers. In the method of AHP combined TOPSIS and Fuzzy TOPSIS, the larger the coefficient of closeness, the better are the order of the interior decoration professional managers. The results of this study indicate that, Fuzzy TOPSIS is the best method in selecting a proper interior decoration professional manager. The results of this research can be used by the interior design and decoration industry to find a suitable professional manager for the pursuit of greater profits.