Drainage system design structure of landscape garden

The utility model discloses a drainage system design structure of a landscape garden. The device comprises a second filter screen, a first water pump, a second water pump and a first filter screen, a second filter screen is arranged and is used for further filtering pond water entering a fifth water guide pipe; when the vegetation shrub layer needs to be irrigated; a first water pump is used for enabling water in the pool to enter a fifth water guide pipe through a top cover and then further enter a second water guide pipe; water entering the second water guide pipe further enters the irrigation spray head through the first water guide pipe under the action of the first water pump and is sprayed out; therefore, the purpose of irrigating the vegetation shrub layer is achieved; the water recycling device is simple in structure and easy to operate, the first filter screen is used for filtering water entering the second water storage tank, the second water pump is used for enabling the water in the second water s