Suspended type aeration disk

The utility model relates to an aeration device, in particular relates to a suspended type aeration disk and aims to solve the problems of poor aeration effect, high cost and complicated operation of an existing aeration device. The aeration disk comprises a nano aeration pipe tail end joint, a PVC (polyvinyl chloride) pipe, a nano aeration pipe, a check valve, a sealing joint, a connection rope, a weight and a plurality of tough soft ropes, wherein the nano aeration pipe is coiled into a planar spiral line shape; the nano aeration pipe tail end joint is arranged at one end, which is positioned at the center, of the nano aeration pipe; the check valve is arranged at the other end of the nano aeration pipe; two ends of the PVC pipe are connected with each other to form a circle through the sealing joint; the nano aeration pipe is arranged in the circular PVC pipe, and the nano aeration pipe and the PVC pipe are fixed with each other; one end of each tough soft rope is fixed on the PVC pipe, and the other end o