企業在成立之後，企業外在的經營環境與企業內部的經營狀況也會隨著時間不停變化；企業為求永續生存，需不斷提升其競爭力，而在遭遇困境，為了找出問題，需為其公司做企業診斷，以尋求突破與改善。
如果企業平時對於本身體質未特加注意，到了公司財務發生問題之後，才尋求管理顧問公司為其做企業診斷，往往為時已晚。而傳統的企業診斷大多侷限於資產及財務評估、關鍵成功因素探討及企業因應策略等，使用的企業診斷方法有：比率分析法、百分率分析法、趨勢分析法及標準差異分析法…等，以往的方法在找出問題點進行改善之後也無法看出公司之績效有無差異，故本研究一方面從各個部門之績效去評估公司的狀況，另一方面也利用企業診斷之重點項目為企業做診斷，而後利用模糊樹(fuzzy tree)方法，將企業診斷的受評單位轉換成樹的結構，定期的為企業進行診斷，每一階段的企業狀態皆是一個模糊樹，再利用距離測量的方式，得出每一個模糊樹與初始階段模糊樹之比較，以提供管理顧問人員或企業管理者做決策時的參考及依據。

Due to external factors as well as influences from within a business, maintaining a competitive edge over time requires a great deal of focus on continual improvement. These improvements are best handled through the employment of a management consultant who can impartially evaluate the various elements that impact a given business. Moreover, in cases where a business has not properly taken care of its internal operations it is sometimes too late to hire a management consultant to establish reforms.
Previous evaluation methods have not addressed the need for proper comparisons between the status of a company both before and after professional evaluations are made by a management consultant. Therefore, in this study, an emphasis is placed not only on taking into account information from each department within a company, but also on those important items essential to the evaluation process. In addition, the fuzzy tree method is employed in order to establish a new evaluation process that can be used during consultations by those in a decision-making capacity. An example is used to demonstrate the approach.

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