本研究以模糊偏好順序評價法（Fuzzy TOPSIS）來評估室內設計圖說，以解決室內設計評分不客觀的問題。六項室內設計圖評分準則是取自2013特力家居盃室內設計競圖比賽辦法，並透過模糊德菲法取得專家們之共識。六項評分準則依據重要性排序，依次為設計概念、創意創新、藝術美學、使用機能、環保健康及實務應用價值。本研究採用模糊偏好順序評價法及教師們之原評分方式來進行學生室內設計圖成績之排名。研究結果顯示，相較於教師們之原評分方式，本研究所建議之Fuzzy TOPSIS可以得到較客觀之室內設計圖成績排名。Fuzzy TOPSIS可以很容易地以EXCEL程式來計算學生室內設計圖之排名。

This study uses Fuzzy TOPSIS （the Fuzzy Technique for Order Preference by Similarity to Ideal Solution） to evaluate the interior design diagrams. That can solve the problem in non-objective ratings of interior design diagrams. Six criteria to assess the interior design diagrams were obtained from competition rule of the I-HOUSE interior design competition cup. The consensus on the above six criteria among experts is examined using Fuzzy Delphi method. Six criteria ranked by importance are design concept, creativity and innovation, artistic beauty, functionality, environmental health and practical application value. In this study, the interior design diagrams of students are ranked by Fuzzy TOPSIS and teachers’ original rating scores. The present study indicated that the proposed Fuzzy TOPSIS obtained more objective ratings than teachers’ original ones. The rankings of students’ interior design diagrams can be easily calculated using Fuzzy TOPSIS with EXCEL program.