Three phenolic alkaloid compounds (A,B,C) were isolated from the roots of Thalictrum uchiyamai Nakai (Ranunculaceae). Compound A, a colorless crystalline substance $mp168^{circ}$, $C_{11}H_{15}NO_2$ was identified to be corypalline (6-methoxy-7-hydroxy-N-methyl-1, 2, 3, 4-tetrahydroisoquinoline) which has been reported by Wu from Thalictrum rugosum. Compound B, $mp166^{circ}$ and Compound C, $mp164^{circ}$ were shown aromatic rings by UV, IR spectra and chiral center by CD.