目前環保署積極推動垃圾強制分類政策，其垃圾減量之影響程度將成為垃圾資源回收分選廠是否興建的重要考量之ㄧ，本研究主要以花蓮縣預定興建的北區垃圾資源回收分選廠作為分析案例，並以國內垃圾強制分類政策試辦之縣市執行成效以及國外相關研究成果，分析探討花蓮縣北區垃圾資源回收分選廠興建設置之必要性及其效益評估。 根據本研究結果，於垃圾強制分類政策實行後，第一階段試辦之10個縣市均已提高源頭分類(Source-Separation)之資源回收率，由19.86%(2004年)提升為20.70%(2005年)，因此，經強制分類後的垃圾，進入垃圾資源回收分選廠之資源物已大量減少，將影響分選廠之回收處理效率下降，同時亦降低回收具經濟價值資源物的數量及其變賣所得，相對地也增加每公噸的處理成本，由設計量所計算之每公噸568元至2020年將提高到1,410元。因此，目前於花蓮縣預定興建的北區垃圾資源回收分選廠之設置必要性及效益已降低，建議現階段應以建立區域合作機制為優先考量，以保持垃圾處理方式之彈性，隨時因應緊急狀況的發生。 The Enforced Garbage Sorting Plan has been promoted aggressively by EPA. The achievement of garbage reduction will be an important influence factor for the establishment of Resource Recycling and Sorting Plant (RRSP). This study took the “Northern District Resource Recycling and Sorting Plant” planning by Hualian County as an analysis base and synthesized the Enforced Garbage Sorting Plan implemented results in other 10 counties/cities of Taiwan and foreign research experiences as well to assess the necessity and efficiency of establishing “Northern District Resource Recycling and Sorting Plant”. According to this study results, the recycling rate in Source -Separation has been enhanced from 19.86%(2004) to 20.70%(2005) in the 10 Phase I demo counties/cities after carrying out the Enforced Garbage Sorting Plan. Hence, the less recycling material can be found/treated in the RRSP due to the garbage has being Source –Separated before inputting into the RRSP. Besides, the treatment efficiency is going down and the less profit feedback can be returned from the resource recovery in RRSP. Furthermore, the treatment costs of per ton garbage gradually go up from 568 NT$/Ton ( designed value) to 1,410 NT$/Ton in 2020. Therefore, the necessity and efficiency of establishing “Northern District Resource Recycling and Sorting Plant” will be expected to relatively low under the current garbage disposal policy. It suggests to build the region garbage disposal corporation mechanism instead. It will be more flexible and respond to the emergency in time for the garbage disposal.