Headlight apparatus and method of controlling the same

A headlight apparatus and a method of controlling the same. The headlight apparatus provided in a vehicle comprises a light source unit (210) including at least one light source and emitting a light in a forward direction of the vehicle, a light source driving unit (220) supplying a driving current to the at least one light source included in the light source unit (210), and a control unit (240) receiving information about a travelling environment of the vehicle and determining a driving condition of the light source unit (210) by using the received information about the travelling environment. The driving condition of the light source unit (210) includes a driving current value corresponding to a brightness of the at least one light source included in the light source unit (210).