The present invention relates to a method for controlling a laundry treatment apparatus which automatically removes and discharges foreign substances collected in a filter net provided on an air circulation path. A laundry treatment apparatus according to the present invention comprises: an outer tub; an inner tub disposed inside the outer tub; an air circulation path of which the start end is connected to the side surface of the outer tub, and which includes a section which upwardly extends from the upper side to the lower side; a water drain path which is connected to the lower surface of the outer tub so as to guide water inside the outer tub to be drained to the outside; a filter part having a filter net which is disposed to traverse the upwardly extending section of the air circulation path; and a nozzle arrangement part in which a plurality of nozzles, for spraying cleaning water to the filter net from the lower side of the filter part, are arranged. A method for controlling the laundry treatment apparatus comprises: a water supplying step of supplying wash water into the outer tube; a laundry washing step for washing or rinsing laundry in the inner tub by using the wash water; and a water draining step of controlling the wash water to be drained through the water drain path while controlling the cleaning water to be sprayed through the plurality of nozzles and be drained through the water drain path.