The purpose of this study was to investigate the natural dyeability on extract of Aloe Vera princeps. The experimental items were divided into the mordanting method, component of fabric, extracting portion, and kind of mordants. The experimental study was done to by laundering, abrasion(dry/wet), perspiration(acid/alkali), light fastness test and color difference by C.C.M system. The summerized finding resulted from experiments and investigation are suggested as follows: First, in the C.C.M test on mordanting method, color difference was significantly improved when mordants were treatmented. And the premordanting method showed the highest color difference. Second, in the C.C.M test on component of fabric, color difference of silk was higher than cotton. It was considered that silk has -$NH_2$, -COOH, -OH more than cotton. Third, in the C.C.M Test on extracting portion, color difference of extracting in skin of Aloe leaf was three times higher than that of inside lump. Forth, in dyeing-fastness on mordants, laundering fastness showed 3 ~ 4 grade nearly. In perspiration-fastness(acid/alkali), Al(4~5/4~5) was the highest. In abrasion-fastness(dry/wet), cotton(4~5/4~5) was higher than silk (4~5/4) in all mordants. In light-fastness, silk(2~5) was higher than cotton(1~2) generally and especially Cu mordant of silk(4~5) was the highest. Sixth, in color difference analysis on 7 mordants Cu(29.9), Fe(28.7) and Cr(28.9) showed the highest in silk. And Cu(12.7), Fe(10.42) and Sn(10.43) showed the highest in cotton and Al(23.6, 8.0) showed the lowest in silk and cotton.