2013年9月1日起，土地徵收將改採「市價」作為地價補償之基準， 期以實現土地之「公平正義」。在文獻回顧中，本文歸納合理的徵收補償為在符合現行法令下，交易市場中最可能的價格。即不論由時間軸，亦或地區範圍軸作觀察，都應為合理之價格，不存在非正常上漲之情形。 本文蒐集2011年至2013年桃園航空城範圍內外之成交案例，運用獨立樣本t檢定，分析範圍內之成交價格是否會受到其開發計畫之影響。研究結果顯示，無論是區分範圍內外，抑或從土地使用分區或分季觀察，範圍內之平均成交價格皆受到航空城計畫之影響，與範圍外相同用地之成交價格，呈現非常顯著之差異。 若依據現行的土地徵收補償市價查估辦法，在限制案例蒐集時間下，估算補償價格時無法避免參考非正常上漲之成交價格；此外，將收益法視為配角，亦會導致當比較法之估算價格有所偏頗時，無法由收益法作為權衡，合理的估算補償價格。 / From September 1st on , the government changed to adopt market value as expropriation compensation, in order to practice justice of land. In Literature Reviews, this paper generalize the definition of reasonable expropriation compensation is the most probable price in the market according to current law. In other words , this reasonable price can not rise sharply through the aspect of time and region. This paper collected the transaction price of Taoyuan Air City from 2011 to 2013, then using independent t-test to analyze that will Taoyuan Air City have impact on the transaction price. The empirical results showed that whether from the inside or outside of Taoyuan Air City or zoning or observation from different period, the transaction price must be influenced by Taoyuan Air City, resulting in manifest difference between the inside transaction price and the outside transaction price. Under the limited time of collecting market cases, the government can not avoid estimating unreasonable expropriation compensation according to the current law; Besides, the Income Capitalization Approach is treated as a supporting role which would lead to unreasonable expropriation compensation because of unbalanced prices.