Disclosed is surgical suture for a laparoscopic port site closure device. The surgical suture is configured such that a cartridge receiving surgical suture therein is provided at a fore-end of a needle guide for port site closure； the surgical suture is caught in a needle tip that is pierced through a body tissue by being guided by the needle guide； and when the needle is withdrawn, the surgical suture is pulled out along a path through which the needle was pierced into the tissue, and the surgical suture is tied outside a patient's body, thereby being capable of closing a laparoscopic port site. The surgical suture for the laparoscopic port site closure device, wherein the laparoscopic port site closure device is in a tube shape for being introduced into a port site, includes: a tubular body provided with needle guides that face each other and guide insertion of a needle； wings mounted to a lower portion of the tubular body such that the wings are opened and closed through a cam method； and an operating stick penetrating through the tubular body to operate the wings by being rotated to push and open the wings and to pull and close the wings by being rotated reversely. The laparoscopic port site closure device further includes: a replaceable cartridge provided on a lower end of the tubular body to be detachably combined with the operating stick, wherein the cartridge is provided with the wings capable of being opened by operating the operating stick, and provided with a compartment for receiving surgical suture therein, wherein the laparoscopic port site closure device is configured such that opposites ends of the surgical suture in the compartment are threaded through the wings such that the ends of the surgical suture are pulled out of a patient's body by being caught by a suture slot of a needle that is pierced into the patient's body from outside.
