The MeOH extract of the the leaves of Salix hallaisanensis (Salicaceae) was partitioned successively with $CHCl_3$, 20% MeOH, 40% MeOH and 60% MeOH solution. From the fractions obtained, 9 compounds were isolated, $diosmetin-7-O-{eta}-d-glucoside$ (I), $diosmetin-7-O-{eta}-D-glucosyl-(1{ ightarrow)6)-{eta}-d-glucoside$ (II), $diosmetin-7-O-{eta}-d-xylosyl-(1{ ightarrow}6)-{eta}-D-glucoside$ (III), $quercetin-3-O-{eta}-d-galactoside$ (hyperoside) (IV), $quercetin-3-O-{alpha}-l-rhamnosyl-(1{ ightarrow}6)-{eta}-D-glucoside(rutin)$ (V), luteolin (VI), $luteolin-7-O-{eta}-d-glucoside$ (VII), $kaempferol-3-O-{alpha}-l-rhamnosyl-(1{ ightarrow}6)-{eta}-D-glucoside$ (VIII), and (+)-catechin (IX).