PURPOSE: To eliminate a non-fuel injection state as well as to secure a favorable starting property all the time, by making a device perform fuel injection to all cylinders from a starting fuel injection device simultaneously with a cranking start being detected.

CONSTITUTION: There is provided with a detecting device A which detects a fixed crank angle position of the specified cylinders of a multicylinder internal-combustion engine, and on the basis of the detection signal, a portion as much as the fuel quantity set according to an engine running state is made so as to be spouted out of an injection device B at the fixed crank angle position. In this injection device aforesaid, there is further provided with a detecting device C which detects a cranking start of the engine. And, at the time of detecting the cranking start by this detecting device C, a starting fuel injection controlling device D is operated whereby the fixed quantity of fuel is made to jet simultaneously with detection of the cranking start. With this constitution, a favorable starting property is made so as to be secured.