Plastering machine for building construction

The plastering machine for building construction comprises a bottom plate, stand columns are fixedly installed at the positions, close to the two sides, of the top end of the bottom plate, a rack is fixedly installed in the middle of the front end of each stand column, a machine box is arranged at the top end of the bottom plate, a hydraulic pedal is installed at the front end of the machine box in a penetrating mode, and a plastering plate is installed at the rear end of the machine box. Gas springs are fixedly installed at the positions, close to the two corners of the rear end, of the top face of the machine box, the same ash blocking plate is installed at the top ends of the two gas springs, side blocking leakage-proof assemblies are installed on the two sides of the plastering plate, a re-feeding assembly is installed in the middle of the top face of the machine box and comprises a re-feeding bin, and conveying belts are installed on the inner walls, close to the front section, of the two sides of the re