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 unit (212). The in