The invention discloses a customized model stereoscopic QR code generation method and system for 3D printing, and the method comprises the steps: carrying out the geometric and structural analysis of an inputted customized three-dimensional model; calculating and obtaining a target region suitable for the printing of a stereoscopic QR code, and enabling a common QR code to be mapped to the target region through perspective projection conversion; carrying out the sinking operation according to the perspective projection conversion result, and generating the stereoscopic QR code on the surface of the customized model; finally enabling a user to be able to print the three-dimensional model comprising the stereoscopic QR code through a 3D printer of a single-attribute forming material.