Water-cooling device of saddle-type vehicle and saddle-type vehicle

To more surely prevent the rising of the temperature from occurring when a vehicle runs, and the driving source tends to become hot, and also, to enable the vehicle to take a sufficiently large angle of bank. The vehicle 1 is equipped with the driving source 26 for running, a radiator 46 which is arranged to be displaced to one side from the center 23 of the vehicle body 2 and cools a cooling water 44 for the driving source 26, and a fan 51 which is made rotatable around the axial center 49 extending in the width direction of the vehicle body 2, is arranged in the radiator 46, and can feed air B to the radiator 46. The front end at the central section in the vertical direction of the radiator 46 at a core 58 is located at approximately the same location as the front end of a spinning track 86 of the blade 85 of the fan 51 in the longitudinal direction of the vehicle body 2, or is located ahead of the front end of the spinning track 86. Also, the rear end of the central section in the vertical direction at the core 58 is located approximately the same location as the rear end of the spinning track 86 in the longitudinal direction of the vehicle body 2, or is located behind the rear end of the spinning track 86.