透過結合Faria et al.（2014）的二維度競租投入模型以及Edwards（1990）擁擠性公共財分析架構之設定方式，本文建立了一個標的為擁擠性地方公共財的二維度競租分析模型。利用本文所建立的模型，我們深入分析地區居民人數分配狀況、地區居民人數、擁擠參數以及擴大租利努力投入影響效果參數等因素變動，對於二維度競租活動所可能產生的影響效果。有別於Katz et al.（1990）的公共財競租分析有關於：競租活動不受地區居民人數以及地區人數分配狀況影響的分析結論。本文發現在競租標的公共財存在擁擠性的情況下，總擴大租利與總相互競租兩個維度的努力投入水準，都會隨著兩個地區間的人數分配趨向越來越不平均而增加。又當兩個區域居民人數等比例提高時，總擴大租利與總相互競租兩個維度的努力投入水準，則是都會因此而降低。

By referring to the two-dimensional rent-seeking model in Faria et al. (2014) and the model of Congested public goods proposed by Edwards (1990). We construct a model of two-dimensional rent-seeking for congested public goods. Using our model, we investigate the impact of population, population distribution, congestion parameter and elasticity of central government grants on two-dimensional rent-seeking activities. Different from traditional public goods rent-seeking studies’ finding about the population and population distribution will not affect rent-seeking waste. Our finding shows that the more uneven population distribution, the higher social waste will cause by two-dimensional rent-seeking activities. Moreover, when regional population increase in the same proportion, the social waste of two-dimensional rent-seeking activities will decrease.