Objective To compare and analyze the clinical effects of two surgical methods in the treatment of multilevel cervical myelopathy.Methods The data of 86 patients with multilevel cervical spondylosis myelopathy were retrospectively analyzed from June 2011 to June 2015.48 patients treated with anterior decompression and bone graft fusion were set as A group.38 patients underwent posterior single open -door laminoplasty were set as B group. The changes of nerve function indexes were compared between the two groups before operation,6 months after opera-tion and the last follow -up.Results 6 months after operation,the JOA score of the two groups was significantly higher than before the operation,and the difference was statistically significant(tA =-6.438,tB =-7.425,P <0.05).After 6 months and the last follow -up,there was no significant difference in the JOA score between the two groups(tafter 6 months =-0.892,tlast fol ow -up =0.160,P >0.05).At the last follow -up,the excellent and good rate of A group was 70.83%,that of B group was 71.05%,and there was no significant difference between the two groups (χ2 =0.00,P >0.05).Two groups of patients were successfully completed surgery,the average operation time of A group was (148.75 ±40.68)min,that of B group was (109.34 ±35.61)min,the difference between the two groups was statistically significant(t =4.711,P <0.05).The amount of bleeding in A group was (157.82 ±51.40)mL,that of B group was (235.76 ±61.55)mL,the difference was statistically significant(t =-6.399,P <0.05).Conclusion Anterior subtotal decompression and bone graft fusion and posterior single open door surgery in the treatment of multi segment cervical spondylosis myelopathy can obtain satisfactory neurological function.According to the patients'clini-cal symptoms and complications to develop a reasonable surgical plan is the key to treatment.