Line and tower footing automatic lofting method and system

The invention provides a line and tower footing automatic lofting method and system. The line and tower footing automatic lofting method comprises steps that coordinates of an angle tower, a lofting radius of a tower footing and coordinates of a current point location are obtained; the coordinates of the angle tower, the lofting radius of the tower footing and the coordinates of the current point location are inputted into an automatic lofting model to obtain lofting measurement data, and line and tower footing lofting is carried out according to the lofting measurement data; the automatic lofting model obtains the starting point distance and the ending point distance from the current point position to the strain section; an accumulated distance and an offset distance of the current point location in the whole line are obtained according to the starting point distance and the ending point distance; a tower position center coordinate of a starting point or an end point (depending on which distance between the