Mounting measuring method of steel column

The invention relates to a mounting measuring method of a steel column. The mounting measuring method comprises three steps of (1) distributing column-top measuring signs; (2) measuring an offset line of a control axis; and (3) carrying out mounting measurement. The mounting measuring method particularly comprises the following steps of firstly measuring parallel axis offset lines towards one side of a building by utilizing the control axis of the building; marking out column-top axes and geometrical regression lines of the steel column through ink lines; and at last, when the steel column is mounted, erecting instruments on the axis offset lines, and observing scales at the column top. According to the mounting measuring method, the mounting axes of the steel column can be directly controlled, and the observation precision is high; furthermore, as the instruments are erected on the axis offset lines of the steel column, a user only needs to observe the column top instead of observing the whole steel column from bottom to top so as to effectively evade barriers in complex conditions, so that the mounting measuring method is particularly suitable for the mounting measuring works under the complex conditions with much barrier interferences.