To provide an injector drive circuit in which time difference until an injector closes valve completely can be reduced when switching from ON to OFF of injector drive current, in an injector drive circuit.

In an injector drive circuit 1A in which a predetermined amount of fuel injection is achieved by switching ON/OFF of an injector drive current at a predetermined timing by PWM control of a microcomputer 5A, assuming that a H bridge circuit is provided within the circuit, a coil of injector 10 is reversely excited by outputting reverse drive current to the injector 10 via the H bridge circuit when switching from ON to OFF of the injector drive current.