An electronic apparatus with a noise reduction function includes a microphone for inputting an external sound signal inside a vehicle, a DSP for generating a noise reduction signal in order to reduce noise of the external sound signal, a determination unit for determining a driving state of the vehicle, a correction unit for relatively increasing a degree of noise reduction when it is determined that the vehicle is in automatic driving and relatively decreasing a degree of noise reduction when it is determined that the vehicle is in manual driving, and a speaker for outputting the corrected noise reduction signal.