Simple equipment and method for conveniently adjusting mounting precision of steel column

The invention discloses simple equipment and a method for conveniently adjusting the installation precision of a steel column, and relates to the technical field of constructional engineering steel structure installing.The simple equipment comprises a first installation steel column, the peripheral side of the first installation steel column is fixedly connected with four bracket plates shaped like the Arabic numeral seven, and the four bracket plates shaped like the Arabic numeral seven are symmetrically arranged in pairs; and the second mounting steel column is arranged above the first mounting steel column. The first jack ejector rod is vertically and fixedly installed, the upper end of the first jack ejector rod abuts against the bottom wall of the T-shaped bracket plate, then a worker drives the first jack ejector rod to conveniently lift or descend the second installation steel column, the vertical displacement of the second installation steel column is further conveniently adjusted, the second jack eje