To provide a storage device which has advantages such as space saving, adjustable storage space, easy to carry, fishing line effectively protected, aesthetic, easy to use, wide variety of applications, repetitive use, wide applicability, resource saving Provide storage box for fishing line that can be connected with space adjustment function. SOLUTION: There is a first screw thread 111 on the inside of the opening of the lid 11 of the storage box, the top surface 112 is in the lid of the storage box, and the first thread is provided outside the upper edge portion of the main body 12 of the storage box There is a second screw thread 121 corresponding to the screw thread, a third screw thread 122 corresponding to the second screw thread is present inside the lower edge portion of the main body of the storage box, the main body of the storage box is a penetrating type, There is a fourth thread 131 corresponding to the first thread and the third thread outside the upper edge of the bottom 13 of the box, and inside the lower edge of the bottom of the storage box the second thread and the fourth There is a fifth screw thread 132 corresponding to the screw thread and the bottom surface 133 is in the bottom of the storage box. BACKGROUND OF THE INVENTION【課題】省スペース、収納スペースが調整可能、携帯しやすく、釣り糸を有効的に保護、美観、使用しやすく、多様な用途、繰返し使用でき、適用性が広く、資源節約などの長所がある収納スペース調整機能付き連接可能な釣り糸用収納箱を提供する。【解決手段】収納箱の蓋11の開口部の内側に第一ねじ山111があり、収納箱の蓋の中に頂面112があり、収納箱の本体12の上部縁部の外側に第一ねじ山に対応する第二ねじ山121があり、収納箱の本体の下部縁部の内側に第二ねじ山に対応する第三ねじ山122があり、収納箱の本体が貫通式であり、収納箱の底13の上部縁部の外側に第一ねじ山と第三ねじ山とに対応する第四ねじ山131があり、収納箱の底の下部縁部の内側に第二ねじ山と第四ねじ山とに対応する第五ねじ山132があり、収納箱の底の中に底面133がある。【選択図】図1