The B6-hEGFR mouse is a humanized model constructed by replacing exon 2 and part of intron 2 of the mouse Egfr gene with the EGFR Chimeric cDNA-WPRE BGH pA cassette. The murine signal peptide and partial extracellular domain (c.1~88) are preserved. B6-hEGFR mice can be used for research into the pathogenesis of various cancers, including non-small cell lung cancer (adenocarcinoma), glioblastoma, colorectal cancer, and breast cancer, as well as for the screening, development, and safety assessment of EGFR-targeted therapies.