Construction structure of building external wall insulation board

The utility model discloses a construction structure of a building external wall insulation board, which belongs to the technical field of building construction, and comprises an operation basket, a funnel, a blanking baffle plate, a blanking middle shaft, a handle, a discharge nozzle and a stirrer, the funnel is fixedly arranged at the upper part of the operation basket, the stirrer is arranged at the upper part of the funnel, and the blanking middle shaft is rotatably connected to the lower part of the funnel; the discharging center shaft extends to the outside of the funnel, a discharging baffle is welded to the middle of the discharging center shaft, two handles are fixedly installed at the two ends of the discharging center shaft, the two handles are symmetrically arranged, and a plurality of discharging nozzles are welded to the lower end of the funnel. By means of the discharging mechanism provided with the multiple discharging nozzles, a worker can drive the discharging baffle to rotate through the di