Provided are a refrigerator including an aerogel serving as an auxiliary insulation material and a manufacturing method thereof.The refrigerator includes a main body including an inner case constituting a storage compartment and an outer case disposed outside the inner case, a main insulation material disposed between the inner case and the outer case, and an aerogel coating layer formed on a rear surface of the inner case or a front surface of the outer case by coating a liquid-phase aerogel and curing the aerogel.