Method for performing inter-conversion between survey coordinates and construction coordinates

The invention relates to a method for performing inter-conversion between survey coordinates and construction coordinates. The method specifically comprises the following steps of: obtaining designed positioned survey coordinates of a building by a designing institute; converting all survey coordinates needing lofting through Excel software by using a computer, wherein a construction coordinate system conversion equation needs using in the conversion process of all the survey coordinates; converting the survey coordinates into coordinates which are parallel to and vertical to the building by using the construction coordinate system conversion equation, wherein the azimuth angle of a distance between two points on the same axis in the coordinate system is surely one of 0 degree, 90 degrees, 180 degrees and 270 degrees despite that the two points are on the same vertical axis or the same horizontal axis, and one of the values of the two points (A, B) on the same vertical axis or the same horizontal axis is sure