The present invention provides a method for producing an anti-EGFR monoclonalantibody and the applicationsthereof. The method comprises the steps of: designing and synthesizing thelight chain and heavy chain according to the codonspreferred by Chinese hamster, transfecting GS knockout host cells CHO-CR-GS-/-, culturing cells using serum-free technology,isolating and purifying the antibody, and obtaining the low immunogenicityCMAB009 antibody.