Here, we investigated the role of miR‐9 in non‐small‐cell lung cancer (NSCLC) cell invasion and adhesion in vitro and explored whether miR‐9 was involved in transforming growth factor‐beta 1 (TGF‐β1)‐induced NSCLC cell invasion and adhesion by targeting SOX7. The gene discussed is TGFB1; the disease is non-small cell lung carcinoma.