High-elasticity breathable yarn

The utility model discloses a high-elasticity breathable yarn, relates to the technical field of textile, and aims to solve the problem that the shielding area of the elastic yarn is reduced after the elastic yarn is stretched. According to the technical scheme, the breathable yarn is characterized by comprising a yarn body, the yarn body comprises elastic core yarn and breathable plied yarn, supporting parts are distributed on the elastic core yarn in an array mode in the length direction of the elastic core yarn, and the cross sectional area of the supporting parts is larger than that of the elastic core yarn; ventilation holes are formed between the elastic core yarn and the ventilation plied yarn. The elastic core yarn is the bunchy yarn, the breathable plied yarn is twisted on the elastic core yarn in a self-twisting mode, when the yarn is stretched, the breathable plied yarn is far away from the elastic core yarn, air holes are formed between the breathable plied yarn and the elastic core yarn, the air