A beauty treatment device includes an alkaline water storage that stores alkaline water to be supplied to a skin of a user, and an alkaline water passage having an alkaline water outlet, from which the alkaline water stored in the alkaline water storage is discharged. The beauty treatment device includes an alkaline water supplying mechanism that supplies the alkaline water to the skin of the user, and a heating unit that heats the alkaline water. The beauty treatment device further includes a dirt removing mechanism that removes dirt attached to the skin of the user. Accordingly, there are provided a beauty treatment device and a beauty treatment method which are capable of easily removing sebum, dirt, keratotic plugs, and the like in pores.
