PROBLEM TO BE SOLVED: To provide a food waste disposal method that can efficiently dispose food waste even if it has low calories or high-water content at low cost, and to provide a disposal device.SOLUTION: A food waste disposal device 1 includes: a breeding tank 10 for storing aquatic crustaceans; and water supply means 20 for supplying water to the breeding tank 10, where the multiple breeding tanks 10 are arranged in a multistage manner in a height direction. A food waste disposal method disposes food waste using the food waste disposal device and feeding the aquatic crustaceans with a food waste (X) including a food waste (A) that has pH 3.5 or higher and is solid-like.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2020,JPO&INPIT【課題】低カロリーや水分量の多い食品廃棄物であっても、低コストで効率よく処理できる食品廃棄物の処理方法及び処理装置の提供。【解決手段】水棲甲殻類を収容する飼育槽10と、前記飼育槽10に水を供給する水供給手段20とを備え、前記飼育槽10は、高さ方向に複数配置されて多段になっている食品廃棄物の処理装置1を用い、pH3.5以上であり、かつ固形状である食品廃棄物(A)を含む食品廃棄物(X)を水棲甲殻類に給餌することで食品廃棄物を処理する。【選択図】図1