Abstract: In order to analyze the application effects of automatic feed supplying system in the breeding of pigs, 80 25-day-old weaned piglets were divided into two groups （test group and control group） according to the weight, sex and ancestry, with four repetitions in each group and 10 pigs in each repetition. The test period lasted for 180 days. The pigs in test group were fed by automatic feed supplying system and the pigs in control group was fed by using traditional feeding model. The resuhs showed that the application of automatic feed supplying system could increase the daily gain of pigs, advance the slaughter time and enhance the uniformity. The automatic feed supplying system could decrease the feed consumption and enhance the feed conservation rate. The automatic feed supplying system could significantly decrease the labor force and enhance the utilization rate of labor force.