The invention provides a handpiece for light therapy. In one embodiment, the handpiece for light therapy may include: a main body portion provided in a cylindrical shape to be gripped by a user; an ultrasonic wave generation unit which is provided at one end of the main body unit and which irradiates ultrasonic waves to the treatment site so as to increase the temperature of the treatment site to a set temperature; a laser irradiation unit which is provided inside the main body unit and irradiates laser light to the treatment site; and a housing coupled to the tip of the ultrasonic wave generating unit and housing therein a medium for transmitting ultrasonic waves to the treatment site, in which the ultrasonic wave generating unit may comprise: a frame coupled to the upper part of the housing and having a through-hole through which the laser beam passes; and an ultrasonic element coupled to the frame.