The present disclosure relates to an integrated laundry treatment apparatus, in which a washing machine module and a drying machine module are integrally installed in a common cabinet, and a single drying module is provided to produce dry hot air, such that a size of a product may be reduced, a dried state of laundry being dried in a washing drum and a drying drum is detected in real time while drying processes are simultaneously performed in the washing drum and the drying drum by the common drying module, and the amount of supplied dry hot air and the amount of recovered dry hot air are differently controlled, such that an overall drying process time may be reduced and electric power consumption may be minimized, and the drying processes performed in the drying process and the drying machine of the washing machine are simultaneously completed, such that convenience for a user may be improved, and a method of controlling the same.