Wetland ecological building block made of construction waste and manufacture method of wetland ecological building block

The invention relates to a wetland ecological building block made of construction waste and a manufacture method of the wetland ecological building block. The wetland ecological building block mainly comprises a planting tank, wherein the planting tank is formed by combining a bottom plate and surrounding enclosure plates. Through holes are evenly distributed in the bottom plate, and through holes are evenly distributed in the enclosure plates. The manufacture method includes the steps that firstly, the construction waste is screened, classified and processed, and the large-size construction waste is crushed so that the diameter can range from 5 mm to 20 mm; secondly, 40 wt%-60 wt% of the construction waste, 10 wt%-15 wt% of cement, 8 wt%-10 wt% of water and 20 wt%-30 wt% of quartz sand are mixed to obtain a mixed material; thirdly, the mixed material is placed in a mould and is placed indoors to be cured for 8-15 days after vibration compression and forming; and fourthly, whether the through holes meet the r