Taking hair and wool fibers as the prototype, the structure bionics of jute fibers was conducted in two modified ways: room temperature alkali treatment and heat treatment. The impact of bionic spiral jute fibers on the frictional properties of the friction materials was investigated. The results showed that when the content of spiral jute fiber was 3% and the helix angle was 66°,friction factor met the brake requirements and its abrasion resistance achieved the most excellent. Spiral jute fiber increased the friction factor of friction material at 100℃ and 150℃. The friction factor of the spiral jute fiber reinforced friction materials decreased with the increase of fiber at 200℃ and 250℃. The friction factor of straight jute fiber got the highest. Spiral jute fiber friction materials showed good wear resistance at 300℃ and 350℃. The friction factor of the friction material decreased with the decrease of helix angle of spiral jute fiber.