PURPOSE: To provide a fuel supplying device capable of securing supply of mixture in a state other than a normal state and good gasification of gasoline in starting at extremely low temperatures (in traveling in cold districts), in decelerating during high-speed driving, or in reducing of load.

CONSTITUTION: This fuel supplying device is provided with an injector 34, an injector controller and a throttle valve body 8. An injector body having a fixed device in a hole communicated with a manifold and a fuel guide-out pipe are formed on each injector, and the tip part for forming a mixture chamber communicated with an air introducing part is provided. An intake pipe 18 is provided on the device, and its introducing port is positioned downstream of a throttle valve 10. At this position, the air flow is controlled by a solenoid valve 20, and the throttle valve 10 guides air allowed to flow through the intake solenoid valve 20 to the mixture chamber of the injector 34 and to an auxiliary solenoid valve 74 downstream of the throttle valve 10.