PURPOSE: A feed producing system using food waste is provided to separate food solid and liquid of the food waste into high-concentration liquid and low-concentration liquid during a dehydration process to use the high-concentration liquid as wet pig feed. CONSTITUTION: A feed producing system using food waste comprises the following: a carry-in storage tank(10) receiving the collected food waste; a sorting grinder(20) crushing the food waste, and separating foreign materials; a dehydrator(30) dehydrating the food waste supplied from the sorting grinder; a storage tank(40) for storing the dehydrated food solid: a first fermentation drier(50) heating the food solid supplied from the storage tank for ferment-drying; a second fermentation drier(60) heating the food solid supplied from the first fermentation drier for ferment-drying; and a fermentation storage tank(70) for aging the ferment-dried feed.
