A structure of layout of parts around a radiator reducing the effects of heat due to the radiator, that is, a structure of layout of parts around a radiator provided with a radiator provided with an inflow part and an outflow part of a heat exchange medium flowing through the inside at two sides in a substantially horizontal direction, an engine arranged at a rear of the radiator, an exhaust pipe arranged at a rear side of the engine, and an intake duct connected with the engine and having an intake port introducing outside air, the intake duct being arranged at a side closer to the outflow part than the inflow part, whereby the ambient temperature of the intake duct can be reduced and the temperature of the engine intake air can be reduced.