Constructed wetland sewage treatment device

The invention discloses a constructed wetland sewage treatment device. The device comprises a shell, wherein the top of the shell is communicated with a water inlet pipe for sewage to enter, the inner top of the shell is provided with a pretreatment mechanism for treating garbage in sewage, and the outer wall, close to the bottom, of the shell is communicated with a drainage pipe for drainage. The pretreatment mechanism comprises a filter plate. A cutting mechanism used for cutting garbage is connected among a first fixed plate, a first movable plate, a second movable plate and a third movable plate. A rectangular area formed by the first movable plate, the second movable plate, the third movable plate and the first fixed plate is shrunk and is matched with the cutting mechanism, so that large garbage can be cut, meanwhile, the cut garbage can be concentrated and extruded, water can be conveniently extruded, and the treatment efficiency is greatly improved. 本发明公开了一种人工湿地污水处理装置，包括壳体，所述壳体的顶部连通有用于污水进入的进水管，所述壳体的内顶