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Objective: To investigate the expression of MMP-13 in non-small cell lung cancer (NSCLC), so as to analyze its correlation with prognosis of NSCLC. Methods: MMP-13 expression was detected in 99 NSCLC tissues and 32 normal lung tissues by immunohistochemical method. Results: (1) Expression of MMP-13 (51.5%, 51/99) in cancer tissues was significantly higher than that in normal tissues 0% (P ＜ 0.05). Expression level of MMP-13 was significantly related to lymph node metastasis and clinical stage (P＜0.01). (2) Kaplan-Meier analysis showed that expression level of MMP-13 was closely correlate with the prognosis of NSCLC. Multivariate Cox model analysis suggested that the survival time was significantly related to clinical stage and the expression of MMP-13. Conclusion: MMP-13 is an independent factor that affect prognosis.