This creation is that a plants case net cultivates the fixed device of floating platform,Include at least two for hollow float tube socket parallel sleeve,One loading plate being arranged above sleeve,And the hollow insertion pipe that is upwardly extended in loading plate top surface side of setting,There are the reinforced ribs of connection its inner wall of what in the hollow insertion pipe； It is surrounded by hollow circular or rectangle Hou for hollow float tube concatenation respectively using two parallel sleeves of a plurality of fixed devices,Each loading plate and insertion pipe can be enable to float on the what water surface and form a floating platform by the buoyancy of hollow float tube,And each insertion pipe can firmly be plugged and fixed for a railing respectively,Each railing is set to be surrounded by the fence on a what water surface,Each insertion pipe also hangs for the netting gear of case net cultivation simultaneously,It surrounds netting gear in underwater and forms breeding spaces.本創作為一種箱網養殖浮台固定裝置，包括有至少兩個可供空心浮管套接之平行套筒、一設置在套筒上方之承載板，以及一設置在承載板頂面側邊向上延伸之空心插接管，該空心插接管內具有連接於其內壁的補強肋；利用複數個固定裝置的二平行套筒分別供空心浮管串接圍繞成中空圓形或矩形後，即可藉由空心浮管的浮力而使各承載板及插接管得以漂浮於水面上而形成一浮台，且各插接管可分別供一欄杆穩固地插接固定，使各欄杆得以圍繞成位於水面上的圍欄，同時各插接管亦可供箱網養殖用的網具懸掛，使網具在水面下圍繞形成養殖空間。
