A condensate discharge device of an intercooler for a vehicle is provided to remove condensate collected inside an intercooler. The device includes an ejector hose that is disposed between an inlet tank and an outlet tank to form a flow path for an air flow between the inlet tank and the outlet tank. An ejector housing is disposed on one side of the outlet tank. The condensate collected in the outlet tank is introduced into the ejector housing. An ejector nozzle is disposed in the ejector housing and injects the air introduced from the ejector hose into an inner space of the outlet tank. When injecting the air, to inject the condensate, which is introduced from the outlet tank into the ejector housing, injecting the inner space of the outlet tank with the air.