The physicochemical properties of kidney bean crude and refined starch were investigated. The results were as follows: Amylose content of refined starch was 77%. Blue values of crude and refined starch were 0.375 and 0.410, respectively: Ferricyanide numbers of crude and refined starch were 1.00 and 1.94, respectively, and alkalinumbers of crude and refined starch were 8.67 and 6.90, respectively. Amylose had molecular weight of 18067 and degree of polymerization was 112: Amylopectin had degree of branching of 3.7 per 100 glucose units and glucose units of 27 per segment of amylopectin. Water binding capacities of crude and refined starch were 202.1% and 169.4% respectively. Both swelling powers of crude and refined starch were increased rapidly from 70℃ to 90℃ and their curves showed a single-stage pattern. The optical transmittance of 0.2% crude starch suspension was increased rapidly from 80℃ to 83℃ and that of 0.2% refined starch suspension was increased rapidly from 77℃ to 83℃. Brabender hot-paste viscosities of crude and refined starch at 6% and 8% concentation (solid basis) showed the similar amylogram patterns of c type with no peak vircosity.