The present invention relates to a module for use in skin surgery. The module for use in skin surgery includes: a main body, both sides of which are open and having an inner space; a reciprocating assembly which is built into the main body, and which can be moved forward and backward in the lengthwise direction of the main body through a screw-type coupling while the reciprocating assembly is rotated; a needle assembly built into the main body so as to contact the reciprocating assembly while enabling the reciprocating assembly to be rotated, wherein the needle assembly includes a plurality of needles which retract or extend through one end of the main body; and a guide suction assembly, one end of which contacts the skin such that each end of the needle is retracted or extended, and to which one end of the main body is coupled to enable the guide suction assembly to be rotated and contact the skin such that one end of the guide suction assembly is closely attached to the skin to thereby suction air.