The present invention relates to a skin measurement device capable of measuring information related to the skin. The skin measurement device capable of transmitting and receiving data to and from a skin treatment device, according to one embodiment of the present invention, comprises: a sensing unit formed so as to sense information related to the skin; and a control unit for controlling the sensing unit such that the sensing unit senses information related to certain skin, on the basis of contact between the skin measurement device and the certain skin, wherein the sensing unit is formed so as to emit light on the certain skin and to sense the information related to the certain skin on the basis of light reflected from the certain skin.