Alternative perpendicular flow artificial wetland rural sewage courtyard type landscape treating device

An alternative perpendicular flow artificial wetland rural sewage courtyard type landscape treating device is provided, wherein three layers of limestone filler are horizontally filled in an artificial wetland, the grain size of the upper limestone filler is 15-30 mm, the grain size of the middle limestone filler is 8-15 mm, and the grain size of the bottom limestone filler is 15-30 mm, one ends of the upper layer and the lower layer of the limestone filler are respectively connected with a water inlet pipe, and the other ends of the upper and the bottom layers of the limestone filler are respectively connected with a water outlet pipe, the water inlet pipes which are connected with the upper layer and the bottom layer of the limestone filler are respectively provided with an inlet valve, and the water outlet pipes which are connected with the upper layer and the bottom layer of the limestone filler are respectively provided with an outlet valve, when water in the artificial wetland perpendicularly flows downwards, the upper outlet valve and the bottom inlet valve are opened, and the upper outlet valve and the bottom inlet valve are closed, when water in the artificial wetland perpendicularly flows upwards, the upper outlet valve and the bottom inlet valve are opened, and the upper inlet valve and the lower outlet valve are closed. The alternative perpendicular flow artificial wetland rural sewage courtyard type landscape treating device has strong treatment ability, long operation life, stable operation effect, small occupied area and the like, can be flexibly constructed, is mainly used in courtyards in rural area, can treat sewage, and improves the landscape of the courtyards.