At present, great progress has been made in the study of cervical sagittal balance parameters, and many scholars have devoted themselves to investigate the relationship of these parameters with adjacent segment degeneration (ASD). The preliminary results are satisfying. ASD patients often have cervical sagittal imbalance, with varying variations in different parameters. And there are strong correlations among these parameters. At the same time, the preoperative age of patients, severity of cervical degeneration, surgical methods, and selection of surgical segments also have a significant impact on the occurrence of ASD.