PURPOSE: To provide a fuel supplying device for a two-cycle engine in which vibration can be reduced by reducing a size and weight of a throttle body.

CONSTITUTION: In a fuel supplying device for a two-cycle engine, an intake manifold 16 having an intake path 16a connected to a crank chamber 13 is arranged in a crank case 8, a throttle body 17 is connected to the intake manifold 16, and a fuel injection valve 21 injecting and supplying fuel into the intake path 16 is provided, while at least a part of an injection nozzle 21a side end part in the fuel injection valve 21 is supported by means of the intake manifold 16. A counter-injection nozzle 21c side end part in the fuel injection valve 21 is supported on a body main body 18 of the throttle body 17.