The present invention relates to a method for controlling the feed rate of a liquid feed for pigs, and more particularly, to a method for controlling feed rate of a liquid feed for pigs that feeds liquid feeds of different nutrient levels by growth ages or growth stages and feeds them by a predetermined amount.A method for controlling the feed rate of a liquid feed for pigs according to the second aspect of the present invention includes inputting a number of pigs, a saccharide feed intake amount, a ratio of the compound feed and hot water, a donut number, Wherein the control unit is configured to store each of the mixed feeds having different nutritional levels according to the growth date and growth stage in a storage container provided with a plurality of storage containers, Of the total amount of feed to be fed to the pigs at the time of growth or growth stage, respectively A hot water injection step of supplying hot water of 35 to 40C by a predetermined amount to each of the mixers according to a signal of the control unit A mixing step of mixing the mixed feed and hot water in the respective mixers according to the signal of the control unit by means of stirring means so that the liquid content of the mixed feed in each of the mixers is maintained at 20 to 30% The liquid feed mixed in each of the mixers is fed to the feeder at a predetermined time interval according to the signal of the control unit. The liquid feed mixed in each mixer is fed to compressed air A supply step in which the supply step is carried out And a sensor installed in the feeder of each of the pens senses the remaining amount of the liquid feed and sends a signal to the controller after a lapse of a predetermined time in a state in which the liquid feed is empty in the feeder to automatically feed the mixture feed and hot water into the controller And a sensing step of automatically controlling the supply of the mixed gas to the respective mixers from the respective mixers.본 발명은 양돈용 액상사료의