An apparatus and a method for controlling engine restarting of a vehicle includes a hood opening recognition switch automatically on when a hood of the vehicle is opened and outputting a hood opening recognition signal; a front sensor installed on the front of the vehicle and outputting a sensing signal by sensing an object positioned with a predetermined distance in front of the vehicle; a determination unit verifying whether at least one of the hood opening recognition signal and the sensing signal is inputted in the state where an engine of the vehicle is off; and a setting unit setting a lock of restarting of the engine when it is verified that at least one of the hood opening recognition signal and the sensing signal is inputted.