A sea cucumber cutting apparatus for efficiently cutting abdomen of a boiled sea cucumber. SOLUTION: A pair of conveying belts 26a, 26b that convey and feed a sea cucumber from both sides so that the abdomen is located on the lower side, and a sea cucumber that is nipped and conveyed between the pair of conveying belts 26a, 26b. A cutting member 40 that cuts the abdomen and a pressing member 46 that faces above the cutting member 40 and presses the sea cucumber that floats when the cutting member 40 cuts the sea cucumber from above. The abdomen of the sea cucumber was cut sequentially with the cutting member 40. [Selection] Figure 2【課題】ボイルしたナマコの腹部を効率よく切断するナマコの切断装置を提供する。【解決手段】下側に腹部が位置するようにナマコを両側から挟持して搬送する1対の搬送ベルト26a、26bと、1対の搬送ベルト26a、26bに挟持されて搬送されているナマコの腹部を切断する切断部材40と、切断部材40の上方に臨み、この切断部材40によるナマコの切断の際に浮上したナマコを上方から押さえる押さえ部材46とを有し、間隔をもって順次搬送される複数のナマコの腹部を切断部材40により順次切断するようにしたもの。【選択図】図2