Thirteen alkaloid compounds isolated from whole plant of Corydalis incisa(Thunb.)Pers.were identified. These compounds are(+)-14-epicorynoline(Ⅰ), N-trans-feruloyltyramine(Ⅱ), corynoline(Ⅲ), acetylcorynoline(Ⅳ), corynoloxine(Ⅴ), protopine(Ⅵ), corycavine(Ⅶ), (+)-corytuberine(Ⅷ), corydamine(Ⅸ), corysamine(Ⅹ), coptisine(Ⅺ), dehydrocheilanthifoline(Ⅻ) and 12-hydroxycorynoline(ⅩⅢ). CompoundⅡ,Ⅷ and Ⅻ are obtained from C.incisa for the first time.