本研究提出一套電腦化工具，讓規劃者能夠方便地評估公共設施計畫方案。研究中首先針對公共設施計畫方案評估的概念進行簡短的回顧，並對為何需要一套電腦化工具做一簡短的探討。接著著眼於公共設施計畫的一般性內容、規劃程序、及概念性的評估方法進行說明。其次針對此一工具的開發進行整體性的關係說明：包含此一工具與使用者間，工具內部不同模組間的互動關係二部份。其中工具內部係由GIS模組、介面模組、評估指標模組、及求解模組所組成。GIS主要扮演空間對非空間資料管理、視覺展示、及空間分析工具的提供者。介面模組負責與使用者、與其他模組間的溝通工作。評估指標模組則是公共設施計畫方案評估專業知識的提供者，並由多個關聯式資料表所構成。求解模組則係由許多個問題求解副程式所構成的程式庫，且可以彼此相互合併或統合，達到問題求解的目的。研究最後以彰化縣既有的都市計畫資料庫為例，說明如何應用此一工具來進行評估，並藉由此一過程來展示此一工具如何提昇複雜且重複的評估作業的效率、資料處理上的精確性、及方案評估上的使用彈性。

In this paper, we describe a computer-based tool that planners can use to easily evaluating the alternatives of public facility plans. Section 1 is a brief review about the essential evaluating concepts of it and a short description of why a computer-based tool is necessary. Then, we describe the components, the general planning process, and the conceptual evaluating methodologies underlying it in section 2. In section 3, we describe the overall implementation of the tool involved two different issues: the interaction of the user with the tool and the interaction of the parts within the tool and the tool itself: which integrates the GIS, the user interface, the evaluating-criteria, and the problem-solving module into an evaluating assistant tool. The GIS module acts as a spatial and non-spatial data-management, visualization and spatial analysis tool. The user interface module participates a role on communicating among users and other modules. The evaluating-criteria module is used as provider of professional knowledge base of it and presents with many relational data tables. The problem-solving module is a library combined of many subroutines that can be aggregated to find the solution of evaluating problems. Finally, we describe how the tool was used to evaluate the alternatives of public facilities plans derived from an existing database of Changfua county and show its efficiency on complex and duplicated evaluating tasks, its accuracy on data manipulating and its flexibility on alternatives evaluating.