To establish a hysteroscopic chronic endometritis (hCE) scoring system for patients with chronic endometritis, and observe the correlation of hCE score with fertilization-embryo transfer (IVF-ET) pregnancy outcomes in infertile women. The study retrospectively investigated the correlation of morphologic features and hCE score with pregnancy outcomes during IVF-ET in infertile women with CE (=429) at Yantai Yuhuangding Hospital between January 2017 and September 2018.