The invention discloses PNCR boiler flue gas treatment equipment, and relates to the field of industrial furnace flue gas denitration. The PNCR boiler flue gas treatment equipment solves the technicalproblems that a reducing agent in an existing denitration system cannot be fully utilized, and coke in fly ash is wasteful following the discharge of flue gas. A residual carbon catcher is separatelyconnected with a residual carbon self-unloading pipe and a boiler induced draft fan, and the output end of the boiler induced draft fan is connected with the input end of a purified flue gas pipeline. The output end of the purified flue gas pipeline is connected with the input end of a conveying fan. The input end of a reducing agent mixing bin is separately connected to the output end of the residual carbon self-unloading pipe and the output end of a reducing agent filling pipeline, and the output end of the reducing agent mixing bin is connected with the reducing agent input end of a reducing agent injector. The purified flue gas input end of the reducing agent injector is connected with the output end of the conveying fan, and the reducing agent output end of the reducing agent injector is connected with the input end of a reducing agent pneumatic conveying pipeline. The output end of the reducing agent pneumatic conveying pipeline is connected with a boiler combustion chamber.