Alignment device facilitating assembly type building prefabricated column installation and construction method

According to the alignment device facilitating assembly type building prefabricated column installation and the construction method, the steel bars are rectified through the positioning steel plate, the technical problem that the prefabricated column node steel bars are difficult to align is solved, in addition, an L-shaped plate on the positioning steel plate is embedded into a cast-in-place layer after a steel sleeve is fixed, and the positioning steel plate is fixed to the L-shaped plate. After the positioning steel plate is removed, the screw rod through hole in the L-shaped baffle can be aligned with the steel sleeve and is fixed through a bolt, the bottom plate on the L-shaped baffle corresponds to the L-shaped plate, so that the outer boundary of the vertical plate is inevitably overlapped with the column edges of the upper-layer prefabricated column and the lower-layer prefabricated column, and when the upper-layer prefabricated column is hoisted, alignment installation can be carried out by taking th