Reusable biological floating bed

The invention relates to a reusable biological floating bed which is characterized by consisting of a frame, a net cage and net sheets. The net cage and the net sheets are respectively fixed on the frame by nylon ropes. The frame the depth of which is 20cm is made of PVC pipes with the diameter of 50mm and is rectangular or square; and the area of the frame can be determined according to the requirement. The net sheets on the upper layer are used for fixing plants and the mesh diameter of the net sheets is about 2cm; and the mesh diameter of the net cage is about 2mm and the net cage is used for protecting the roots of the plants. The reusable biological floating bed has the following advantages: firstly, the floating bed is light, convenient to assembly, disassembly and reuse; secondly, with the net cage design, the floating bed is beneficial to protecting the roots of the plants; and thirdly, the middle of the floating bed frame has a double-layer net sheet structure, so the floating bed has stronger transmittance compared with the traditional used foam plate and is beneficial to growth of fishes and planktons in water.