To provide a fuel injection control device of an engine capable of reducing sticking of a deposit to a cylinder injection injector, while minimizing the deterioration in a combustion state.

This device is applied to the engine 1 having the cylinder injection injector DI for injecting fuel into a cylinder C and a port injection injector PI for injecting the fuel into an intake port 23; and supplies the fuel of a request injection quantity to the engine 1 by the cylinder injection injector DI and the port injection injector PI when the engine 1 is in a low rotation-low road operation state. The device injects the fuel by selectively switching (A) a first injection mode for setting the cylinder injection ratio larger than the port injection ratio and (B) a second injection mode for setting the cylinder injection ratio smaller than the port injection ratio, when selecting this injection form.

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