由於高層建築迅速增加，而大樓內的垂直交通需求型態也愈複雜，而國內卻仍缺乏一套完整的電梯系統設計與評估標準，以致於常發生電梯運轉效率不高或電梯投資成本的不經濟性等情況。 本研究將對傳統的電梯設計方法改良後，以七座辦公大樓為研對象，分別求出傳統模式及改良模式的運算結果，再與實際大樓運行狀況比較，証實改良模式具有實用性，再以改良模式進行電梯系統設計，求出最佳之電梯數、電梯速度及容量，並且以敏感度分析，找出電梯設計的主要影響變數。

　　　　　In recent years high-rise buildings have been promptedin Taiwan. Conventional design method of lift systems faces difficulties in responding to the patterns of demand in highrise building, and how to manage lift systems design effectively and economically becomes important. In this study a revised conventional method for lift systems design is formulated. After odel verification, the model can be used to optimaize the number of lift, capacity and speed. The paper describes a model formulation and anempirical data set in the analysis. Futhermore, the sensitivity analysis has shown how total cost in the base scenario is affected by changes in a number of input factors.