Underwear is one of the indispensable garments in people's daily life, especially women's underwear, which not only needs to be beautiful, but also comfortable and decent. The female underwear in the related art includes a brassiere body and a pair of shoulder straps. The brassiere body includes a cup and a strap. One end of the pair of shoulder straps is respectively connected to the edge of the cup, and the other end is respectively connected to the strap on the same side of the cup. Adjusting rings are provided for adjusting the length of the shoulder strap.