The invention provides an
aquatic plant fixing device for repairing water and bottom mud, and belongs to the field of a
water pollution recovery technique in
environmental protection. The device comprises a submerged
plant fixing frame, two floating frames, a nylon net, an ecological floating plate, a sliding rail, a connecting
rope and a
plant growth substrate, wherein the frames are used for including emergent plants, floating plants and submerged plants into a same
system, the frames are connected through a connecting
rope to form a triangular stable structure, two floating frames are used for respectively planting the emergent plants and the floating plants, a submerged frame is connected with a submerged
plant growing substrate, the water and the bottom mud are repaired by the submerged plants, microbes are doped in the submerged plant growing substrate to promote the plants to absorb and convert pollutants to realize microbe-plant combined repair. According to the
aquatic plant fixing device provided by the invention, the optimization of types of plants and space structure can be realized, environment can be beautified, and
water quality can be purified; meanwhile, the water and the bottom mud can be repaired, and more thorough and effective repair can be realized.