The present invention relates to a lamp control apparatus for a construction machine and a lamp control method thereof, and more particularly to a lamp control apparatus and a lamp control method thereof for controlling a plurality of lamps (e.g., work lamps, deck lamps, cabin lamps, It is possible to reduce unnecessary switches in the cabin and to simplify the operation environment of the operator's equipment by making it possible to perform only the second key input means having the first key input means and the plurality of lower setting keys.
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