Abstract: Because of rare natural dyestuffs that can dye the substrate green color, this paper investigates the properties and the dyeing method of sodium copper chlorophyll (SCC) and the color fastnesses of the dyed green wool fabrics. It is shown that the direct dyeing method, aluminum pre-mordant or after-mordant dyeing method can dye wool fabrics green with neutral SCC liquid; The maximum SCC amount is 1% (o.w.f) with the direct dyeing method, and the maximum aluminum mordant amount is 5% (o.w.f), the maxmum SCC amount is 2% (o.w.f) with aluminum mordant dyeing method. The dyed green wool fabrics have good color fastnesses to washing, perspiration, ironing and abrasion, but they have low light fastness.