Civil engineering construction waste treatment device

The utility model relates to the field of construction waste treatment, and particularly discloses a civil engineering construction waste treatment device. Through the arrangement of the first separation assembly, the second separation assembly and the third separation assembly, after crushed building waste enters the separation box, the first separation assembly can separate iron nails, steel bars and other steel products in the building waste, and then the steel products are discharged out of the first discharge port from the guide plate; building waste enters the second separation assembly from the first separation assembly, water can be injected into a separation box, wood products mixed in the building waste on a third conveying belt float up, at the moment, concrete blocks are guided to a second discharging port through the third conveying belt, and then the wood products floating on the water surface are separated out of an auxiliary box through the third separation assembly; and multi-stage separation