The invention discloses a hoisting construction method for a steel column in construction of a protective support for an existing overcrossing railway. A single steel wire rope is adopted to bind the steel column in an opposite buckling manner through snap rings, and then the steel column is hoisted by a crane. When the steel wire rope is adopted for binding, two ends of the steel wire rope are arranged from two sides of the top of a flange on the steel column to the body of the steel column, then one end A of the steel wire rope winds the steel column from the front of the steel column to the back, the other end B of the steel wire rope winds the steel column from the back of the steel column to the front, the end A of the steel wire rope is connected with the body of the steel wire rope winding from the back to the front through one snap ring to form a slip knot, and the end B of the steel wire rope is connected with the body of the steel wire rope winding from the front to the back through the other snap ring to form a slip knot. During hoisting of the steel column, the steel wire rope is tied with one guide rope which is used for guiding the steel column and releasing the steel wire rope. Working at height can be avoided, and the construction efficiency can be increased.