An indoor unit of an air conditioner, the indoor unit comprising: a case having a suction port and a discharge port; an indoor heat exchanger disposed in the case; and an indoor blowing fan disposed in the case to blow air to the suction port and the discharge port, a vane module disposed at the case, the vane module guiding a flow direction of air discharged from the discharge port, wherein the vane module comprises: a module body installed at the case, at least a portion of the module body being exposed to the discharge port; a vane motor assembled to the module body, the vane motor being configured to provide driving force; a driving link assembled to the module body so as to be rotatable relative thereto, the driving link being coupled to the vane motor, the driving link being configured to be rotated by the driving force of the vane motor, the driving link comprising a first driving link body and a second driving link body having a predetermined angle therebetween; a first vane link located further forwards in a discharge direction of air discharged from the discharge port than the driving link, the first vane link being assembled to the module body so as to be rotatable relative thereto; a second vane link assembled to the second driving link body so as to be rotatable relative thereto; a first vane disposed at the discharge port, the first vane being disposed forwards in a discharge direction of air discharged from the discharge port, the first vane being assembled to each of the first driving link body and the first vane link so as to be rotatable relative thereto; and a second vane disposed at the discharge port, the second vane being assembled to the module body so as to be rotatable relative thereto, the second vane being assembled to the second vane link so as to be rotatable relative thereto. a case having a suction port and a discharge port; an indoor heat exchanger disposed in the case; and an indoor blowing fan disposed in the case to blow air to the suction port and the discharge port, a vane module disposed at the case, the vane module guiding a flow direction of air discharged from the discharge port, wherein the vane module comprises: a module body installed at the case, at least a portion of the module body being exposed to the discharge port; a vane motor assembled to the module body, the vane motor being configured to provide driving force; a driving link assembled to the module body so as to be rotatable relative thereto, the driving link being coupled to the vane motor, the driving link being configured to be rotated by the driving force of the vane motor, the driving link comprising a first driving link body and a second driving link body having a predetermined angle therebetween; a first vane link located further forwards in a discharge direction of air discharged from the discharge port than the driving link, the first vane link being assembled to the module body so as to be rotatable relative thereto; a second vane link assembled to the second driving link body so as to be rotatable relative thereto; a first vane disposed at the discharge port, the first vane being disposed forwards in a discharge direction of air discharged from the discharge port, the first vane being assembled to each of the first driving link body and the first vane link so as to be rotatable relative thereto; and a second vane disposed at the discharge port, the second vane being assembled to the module body so as to be rotatable relative thereto, the second vane being assembled to the second vane link so as to be rotatable relative thereto. a module body installed at the case, at least a portion of the module body being exposed to the discharge port; a vane motor assembled to the module body, the vane motor being configured to provide driving force; a driving link assembled to the module body so as to be rotatable relative thereto, the driving link being coupled to the vane motor, the driving link being configured to be rotated by the driving force of the vane motor, the driving link comprising a first driving link body and a second driving link body having a predetermined angle therebetween; a first vane link located further forwards in a discharge direction of air discharged from the discharge port than the driving link, the first vane link being assembled to the module body so as to be rotatable relative thereto; a second vane link assembled to the second driving link body so as to be rotatable relative thereto; a first vane disposed at the discharge port, the first vane being disposed forwards in a discharge direction of air discharged from the discharge port, the first vane being assembled to each of the first driving link body and the first vane link so as to be rotatable relative thereto; and a second vane disposed at the discharge port, the second vane being assembled to the module body so as to be rotatable relative thereto, the second vane being assembled to the second vane link so as to be rotatable relative thereto.