Curtain wall for building engineering design and construction method

The invention discloses a curtain wall for constructional engineering design and a construction method.The curtain wall comprises a panel, a grid frame is fixedly arranged at the back side end of the panel, a plurality of straight rods fixedly connected with the side wall of the frame are arranged in the grid frame, and a plurality of auxiliary cross rods are arranged between the straight rods at intervals; a mounting plate is fixedly arranged at the intersection of the auxiliary cross rod and the straight rod, bolt mounting holes are formed in the four corners of the mounting plate, a wall fixing device is arranged in a manner of being matched with the mounting plate, the wall fixing device comprises a fixing rod, the fixing rod is a hollow cuboid fixing rod, first through holes are formed in the two opposite sides of the fixing rod, and the first through holes are communicated with the first through holes. First bolts are in threaded connection with the first through holes, mounting lugs are fixedly arrange