In order to study the impact of hydropower construction on soil physical and chemical properties , taking the soil at 2#and 3# Dumping pile Jin'anqiao Hydropower Station as the research object , it was determined the soil physical and chemical properties by comparing with the original landform soil at shrub , woodland and farmland ,.The results showed:①The soil bulk density indicated the dumping pile was greater than the original landscape ; ②total porosity and capillary porosity at original landform was higher than the dumping pile , but the non-capillary porosity was the opposite;③The particles of 2#and 3#Dumping pile are coarse, the percentage of >5mm diameter particles reached 64 .53%and 65 .11%, the proportion was unreasonable .The original landscape of farmland the percentage of diameter particles appeared a normal distribution;④soil organic matter , total nitrogen , hydrolysable nitrogen , availa-ble potassium at the dumping pile were greater than that at the original landform , and total phosphorus , available phos-phorus was the opposite .The results showed that hydropower construction has the great impact on the soil physical and chemical properties .%为研究水电工程建设对土壤理化性质的影响，选取金安桥水电站重塑地貌2＃弃渣场和3＃弃渣场的土壤为研究对象，未受工程施工扰动的灌草丛、林地和农田的原地貌土壤作为对照，对土壤理化性质进行测定，结果显示：①土壤容重为重塑地貌大于其原地貌；②总孔隙度和毛管孔隙度为原地貌高于其重塑地貌，非毛管孔隙度则相反；③重塑地貌2＃和3＃渣场的表层渣体粒径都较粗，＞5 mm粒径的颗粒组成百分比就达到64．53％和65．11％，比例不合理，而原地貌农田的土壤粒径组成基本呈正态分布；④土壤有机质、全氮、水解氮、速效钾含量均为原地貌大于重塑地貌，而全磷、速效磷含量则相反。研究结果表明水电工程建设对土壤理化性质影响较大。
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