Backpack carrying system by the back, shoulder straps, chest strap and belt composed backplane for supporting the entire backpack. Good bear backpack gravity can be uniformly dispersed. Shoulder straps and lumbar pad and chest strap fixed play an important role, must be adjusted, depending on the individual body type, different debugging, in order to better fixed, reducing friction. In addition, the inner parts of the shoulder strap and belt contact with the skin should be soft and flexible, effective and down on the shoulder strap or belt friction change from the elastic vibration. Requires not only the length of the strap can be adjusted, it should be set to slide-style fixed point in the strap for easy adjustment to personal comfort.