Graphic code correction graphic center positioning method and device

An embodiment of the invention discloses a graphic code correction graphic center positioning method which includes the steps: determining the positions of a first position detection graphic, a second position detection graphic and a third position detection graphic in a graphic code scanning image; determining a first straight line and a second straight line in the graphic code scanning image; determining the intersection point of the first straight line and the second straight line as a graphic code correction graphic center. The first straight line passes the connected edge of a dark color module and a light color module which are the closest to the third position detection graphic in the first position detection graphic. The second straight line passes the connected edge of a dark color module and a light color module which are the closest to the third position detection graphic in the second position detection graphic. The embodiment of the invention further discloses a graphic code correction graphic center positioning device. By implementing the embodiment, graphic code correction graphic center positioning accuracy can be improved.