The present invention provides a synchronous livestock feeding system, in which the fodder conveying trough is penetrated with a blocking member. The conveying trough comprises a trough body and a fence configured on the trough body. The fence is configured with a plurality of feeding ports. The outer periphery of the blocking member is adjacent to the trough body and the inner wall of the fence, and can be controlled by a control device to be ascended or descended within the conveying trough. Thus, the blocking member may block the fodder inside the trough body while not ascending, so that the livestock may not stretch into the trough body to eat. When the blocking member is ascended to a suitable height, the livestock can stretch into the trough body through each of the feeding ports to eat.本發明係提供一種家畜同步餵食系統,係於一飼料之輸送槽內穿設一阻隔件,該輸送槽包含一槽體與設於槽體上之一柵欄,該柵欄設有多數餵食口,該阻隔件之外緣係接近槽體、柵欄內壁,係可受一控制裝置控制而於輸送槽內上升或下降;藉此,該阻隔件未上升時係可隔離槽體內部之飼料,使家畜無法伸入該槽體進食,而該阻隔件上升至適當高度時,家畜即可經由各該餵食口伸入槽體進食。