A structure that increases the glue strength of the fish tank, especially refers to the joint surface of the front, rear, left, right, and bottom sides of the fish tank with one or more stepped surfaces that are equally divided. It is characterized by increasing the contact area of the silicone polymer during gluing, improving the gluing strength of the fish tank, and replacing the conventional glass rods and frame plates to achieve the purpose of beautifying the fish tank.一種增加魚缸膠合強度之結構，尤特指魚缸的前板面、後板面、左板面、右板面與底板面側邊的接合面設有一個或複數個呈等分配置的階梯面，藉以增加矽氧聚合物膠合時的接觸面積，提高魚缸的膠合強度，作為取代習用玻璃圓棒與邊框板片之用，達到美化魚缸的目的，為其特徵者。
