The eco-friendly cattail technical fiber obtained through degumming process, could meet the basic spinning conditions in aspects of fiber length, thickness and strength etc. It was difficult for cattail fiber to spin by itself. The cattail fiber blending with cotton was spun on ring spinning machine according to four different blending ratios. The properties of the blending yarn were tested and analyzed as well. The result reveals that the cattail fiber is capable for spining with cotton fiber together. The strength of the three blending yarn is higher than that of the pure cotton yarn. The strength is the highest when the blending ratio of cattail and cotton is 20/80. The amount of thin places, slugs of blending yarn increase while the neps, breaking elongation decrease according to the rise of the content of cattail fiber.