Using water and methanol, the colorant components were extracted from the heartwood of amor cork tree which is known as the oldest natural yellow dye. The dyeabilities of the colorant on cotton and the fastness of cotton fabrics dyed with amur cork tree extracts were investigated. According to the dye uptake and mordant concentration, antibacterial activities and deodorization properties of dyed fabrics were also investigated. As a results, K/S values of dyed fabrics were increased with concentrations of mordants and amur cork tree extracts. Washing fastness of dyed fabrics was very low, light fastness was fair and the other fastness were good. Deodorization rates of dyed fabrics were increased in proportion to concentrations of amur cork tree extracts. The reduction rates of bacteria measured by Bioassay tests were also increased in proportion to concentrations of mordants and amur cork tree extracts.