本文旨在於探討耐久生產財的平衡投資專案，即由規劃之後，至二手市場採購舊品，其間必然會衍生些許的買賣之間不對稱現象。首先對於市場不對稱的量化處理部分，將採用Box-Cox計量實證方法，依所購置的二手設備式樣別，與對其價格資訊的不同認知，做其估測分析；最後，依經典定名與圖像佈建之方式，提出對此類型投資的對稱方略，以舒緩此類二手市場的不對稱現象。此外，為了進階瞭解投資此二手品之不對稱成因，經本文運用因素分析的評量結果顯示，本區的二手農機由規劃購置，至搜尋採買的階段，存有明顯的多構面不對稱問題，經採經典定名與依量化排序之後，此類二手買家的平衡策略，分別為依序處理「技術維修力」、「市場推拉力」、「信用效果」等主要不對稱問題，與「款式迷失」、「在地‧地緣效應」、以及「試用取（式）樣」等次要不對稱問題。

In order to avoid the lemons of the agricultural markets,all feasible strategies to improve the used durables’s asymmetric investment were popular to identify and balance the informational asymmetry between the buyers and the sellers. This research focuses on the field survey of the second-hand machines, which farming on the Northeastern Ilan. With the empirical efforts using Box-Cox model and the factor analysis,the derived results support the lemons hypothesis. The main fndings are that we develop the quantifying six criteria for accounting for unbalanced asymmetry. Finally,we conclude with the classics-named when there are enough asymmetric variables are included in models of used durables’s project,it is necessary to manage the maintenance skill of the replacement buyers, secondly for the consideration of the market power and credit searching.