Disclosed is a beauty treatment device including: an upper portion; a lower portion; a handle formed on the lower portion; a hollow hole formed in the upper portion; a conductive holder configured in the hollow hole; and a beauty treatment water generator detachably attachable to the conductive holder, wherein at least a part of the beauty treatment water generator is configured as a conductor so that, when the beauty treatment water generator is inserted into the conductive holder and beauty treatment water flowing out of the beauty treatment water generator contacts human skin, micro-currents, which are generated in the beauty treatment device and flow through a beauty treatment water, can flow through human skin after passing through the conductive holder and the conductor.