A cooling system for an electric vehicle is provided, wherein an exhaust air duct extending into a box is disposed in an air outlet of the box disposed in a lower portion of the vehicle interior; an air discharge port of the fan case coupled to the air outlet portion of the cooling duct faces an air inlet of the exhaust air duct with a predetermined gap therebetween in a direction of air flow; and when the air discharge port of the fan case is projected on a plane including the air inlet of the exhaust air duct, the air discharge port of the fan case is opened inside the air inlet of the exhaust air duct and a predetermined gap is formed in a transverse direction to the air flow between the air discharge port of the fan case and the air inlet of the exhaust air duct.