A gingival retraction cord using microfiber includes a microfiber cord, which is knitted with a plurality of microfiber strands, of 83 to 95 wt %, a dye of 0.01 to 0.10 wt % for dyeing the microfiber cord, and hemostatic agent of 4.99˜16.99 wt % which is soaked into the microfiber cord. A thickness of the microfiber cord is 0.45 to 1.35 mm. The microfine cord is classified into a green microfiber cord, a brown microfiber cord, a purple microfiber cord, a blue microfiber cord, and an orange microfiber cord, depending on thicknesses of the microfiber cords, and the microfiber cords are dyed by using dyes.
