The automatic feeding line of the pig farm not only saves a lot of labor, but also enables the pigs in the whole pen to eat at the same time. The automatic feeding line of the sow farm transports the feed to the quantitative cup. The quantitative cup can feed quantitatively according to the different physiological conditions of each pig. After the feed reaches each quantitative cup, start the blanking system and feed the fields of the whole pen at the same time, Sows begin to eat at the same time, which not only reduces the stress caused by sows' eager eating psychology, but also increases the number of litter and improves the economic benefits of pig farms.