PROBLEM TO BE SOLVED: To provide a method for producing a crab-shaped lunch box by using as a food container, a natural shape of a hairy crab, a king crab or a snow crab, and including boiled rice between the shell and the abdomen.SOLUTION: A method for producing a crab-shaped lunch box includes: removing the shell of a hairy crab, a king crab or a snow crab, cutting off content in the abdomen to provide a space; putting an edible part into a separate container so as to be eaten; filling the space with boiled rice; sticking a paper to the inside of the shell; covering the shell over the boiled rice to prevent dryness of the boiled rice; and providing a cut opening part to the appendage so as to facilitate taking out meat from the inside of the appendage.【課題】本発明は味覚を保存するために毛蟹やタラバガニやズワイガニの自然姿を食品容器として使用し甲と腹部の間に米飯を包含するカニ姿弁当の製造法を提供する。【手段】毛蟹やタラバガニやズワイガニの甲を外し、腹の内容物を切除し、空間を設け、可食部分は別容器に入れて食に供し、空間に米飯を充填し、甲の内側に紙を貼り、米飯の上に甲を被せて、米飯の乾燥を防止し、付属肢に、切開部を設け、付属肢内部の肉を取り出し易くする。本発明は以上よりなるカニ姿弁当の製造法である。【選択図】 図1