To explore the influence to lumbar lordosis of different operation for lumbar disc herniation, as lumbar lordosis has a great effect on keeping the spine sagittal balance. 632 cases of lumbar disc herniation were treated in our hospital from December, 2010 to December, 2014, of which 331 male and 301 female, aged from18-83 with the average age of 50.12, was followed up for 1-36 months with a mean follow-up of 5.29 months. According to the operation methods, we divided into 2 groups: fixation and fusion group, of which 584 cases, including 307 male and 277 female, aged from 18-83 with the average age of 50.81, was followed up for 1-36 months with a mean follow-up of 5.86 months, and non-fusion (percutaneous transforaminal endoscopic discectomy or traditional fenestration and discectomy) group, of which 48 cases, including 24 male and 24 female, aged from 21-77 with the average age of 41.67, was followed up for 1-24 months with a mean follow-up of 5.29 months. The preoperative and postoperative lumbar curvature of the two groups was measured by Cobbs angle. The conclusion is the lumbar curvature in fixation and fusion group has increased after surgery, especially in female, more than 50 years old, at last follow-up more than 6 months, and at operation lever L4/5.