Provided is a surgical instrument which can provide a field of view over a surgical site by sucking blood from a bleeding site during surgery such as tissue dissection and illuminating a dark and deep surgical site. The surgical instrument includes a first body including at least one suction port provided at a front end thereof, a second body configured to cross the first body and to be rotatably coupled to the first body, a suction unit provided in the first body to suck blood from a bleeding site of a patient through the suction port during surgery, and an illuminator provided in the second body to illuminate a space between front ends of the first and second bodies.
