The present invention relates to an apparatus for forming a delivery path for a composition for treatment and an auxiliary assembly for skin treatment including the same, and provides an apparatus for forming a delivery path for a composition for treatment and an auxiliary assembly for skin treatment including the same, the apparatus comprising: a light source; a light irradiating unit for receiving a light from the light source to irradiate the light on a surface of skin; and a control unit for controlling a pulse waveform of a light irradiated through the light irradiating unit so as to form a plurality of pores, which form a path through which a composition applied on the surface of the skin is transferred inside, on the surface of the skin after irradiating the light.