Ejector control device

The present invention provides an injector control device capable of suppressing the disappearance of a preceding injection performed earlier than a main injection in a multi-stage injection, and setting a preceding injection amount to a fuel injection amount less than a main injection amount. An injector control device (2) is provided with: an injection amount setting unit (211) that sets a total injection amount, which is the total fuel injection amount in multi-stage injections in one cycle, and a preceding injection amount, which is the fuel injection amount in preceding injections executed prior to main injections in the multi-stage injections; an energization period setting unit (212) that sets the energization period of the injector (31) on the basis of the fuel injection amount set by the injection amount setting unit (211); and an injector driving unit (213) that controls the driving of the injector (31) on the basis of the energization period set by the energization period setting ...