[Problem] To provide a low-cost tapioca storage method and storage container that can enhance the preservability of tapioca grains at room temperature using a natural preservative. SOLUTION: A dissolving step A for dissolving a powder of protamine or bee ani as a natural preservative in water, a kneading step B for mixing tapioca starch with a liquid containing protamine or bee ani (propolis) and tapioca starch, The tapioca grains are placed in a container having a film-like lid, and the lid is heat-sealed while nitrogen or carbon dioxide, or both, is placed in the container to remove oxygen. And a deoxygenation sealing step D for sealing the container, whereby tapioca grains Q can be stored at room temperature. [Selection] Figure 6【課題】天然素材の保存料を用いて、常温でタピオカ粒の保存性を高めることのできる、低コストなタピオカの保存方法と保存容器の提供。【解決手段】天然保存料としてのプロタミン又は蜂ヤニの粉末を水に溶かす溶解工程Aと、プロタミン又は蜂ヤニ(プロポリス)を含んだ液体とタピオカデンプンを混ぜてタピオカ粒を作り上げる混練工程Bと、タピオカ粒を、フィルム状の蓋を備えている容器に入れる収容工程Cと、この容器内に窒素もしくは二酸化炭素、又はその両者を入れて、酸素を置換除去した状態にしつつ前記蓋をヒートシールして容器を密封する脱酸素密封工程Dと、を有することで、タピオカ粒Qを常温で保存可能としたタピオカの保存方法。【選択図】図6