At the same time, it is the first to clarify the reason for the negative correlation between miR-339 and SLC7A11 expression in lung cancer, and for the first verification that the inhibition of miR-339 led to increased expression of SLC7A11 and weakens ferroptosis, which constituted an important carcinogenesis mechanism for lung adenocarcinoma metastasis. This evidence concerns the gene SLC7A11 and lung carcinoma.