Double -deck ground drain structure

The utility model discloses a double -deck ground drain structure, including the conventional individual layer floor drain in upper strata, the individual layer floor drain has a water leaking pipe who is used for inserting the surface drainage mouth, wherein, water leaking pipe connects lower floor's floor drain, lower floor's floor drain is including leak connecting pipe and the lower floor floor drain shell of cover on water leaking pipe, and the shell leaves the water storage tank that leaks with leaking between the connecting pipe, be provided with deodorant drain elbow in water storage tank, and the delivery port and the additional pipe that leaks of drain elbow communicate, and the water inlet of drain elbow is less than the delivery port. The utility model discloses an at lower floor's floor drain that waterproof layer surface increases, solved the problem that bilayer structure ground waterproof layer ponding discharged, prevented the problem of the downcomer seepage that the floor drain appears in w