The utility model provides a wrap up in disposable underwear of chest formula, a wrap up in disposable underwear of chest formula, its characterized in that includes: the elastic nonwoven fabric material is made is used for wrapping the ring form of women's chest, be equipped with in this ring form be used for with female breast complex chest pad. The ring form is inboard, the qieyu the upside ofrubber band or shrink film be equipped with be used for with female breast complex chest pad, chest pad includes the dustless paper of multilayer that the stromatolite set up, does benefit to to absorb water, during the use, rubber band or shrink film hold up the breast, avoid the mastoptosis and keep better curve molding, do benefit to and mould women's line of beauty, have removed the vexation of wearing the brassiere alone simultaneously from, have both done benefit to beautifully, and it is convenient to dress again. The non -woven fabrics has characteristics such as the gas permeability is good, safety and sanitation, low cost, does benefit to disposable. To women breast -feeding their children, can add the SAP granule in chest pad core selectivity, further promote water absorbing property.