To provide an engine cooling device of a small vehicle can achieve a simple configuration by reducing the number of components, and facilitate mounting operation of a radiator grille.

In the engine cooling device of a saddle riding type vehicle 1, a radiator 26 is arranged between a pair of right and left gusset pipes 44, 44 which vertically extend and an engine 15, and a radiator grille 26b guiding wind to the radiator 26 is provided in front of the radiator 26. The pair of right and left gusset pipes 44, 44 positioned in front of the radiator 26 extend so that a mutual distance in a front view of the vehicle body differs according to a height position. The radiator grille 26b is equipped with a plurality of lateral plates 150 for vertically dividing the radiator grille 26b. A notch part 160 fitted in the gusset pipes 44, 44 is provided with these lateral plates 150 from the upper end and the lower end of the radiator grille 26b.