Abstract: To study the properties of blended fabrics with PTT/PLA/Rayon fibers, this paper, firstly, compared the properties which including strength and hairiness of the ten different kinds of yarns which blended with different contents of PTT, PLA and rayon fibers. Secondly, tested and analyzed the properties of the ten fabrics which corresponding to the ten yarns, which including color fastness to dry rubbing and wet rubbing, anti-fuzzing and pilling property, recovery from creasing and moisture vapor transmission. Finally, probed into the influence of the three fibers on the properties of the fabrics, and found the optimal blending ratio among the fibers, in order to get the best wearability of the fabrics. The results showed that the fabrics had the best wearability when the contents of PTT fibers were 40%, PLA fibers were 15%-30% and the rayon were 30%-45%.