A laundry treatment apparatus according to the present invention comprises: first and second washing units for performing washing, the first and second washing units each having a separate washing space; a first control unit which, when a command for dual washing is input through an input unit, controls the first washing unit such that the same performs washing according to a dual washing course in which the first washing unit and the second washing unit are set to perform washing at the same time, and outputs a dual control signal corresponding to the dual washing course; and a second control unit for controlling, in response to the output dual control signal, the second washing unit such that the same performs washing according to the dual washing course. The present invention efficiently performs washing by using both the first and second washing units at the same time according to the dual washing course.