As shown in the box plot, compared with the normal nasopharyngeal group, the expression levels of DICER1 in the T3 group was significantly lower and statistically different, p < 0.05; while the expression values of DICER1 in T1 and T2 stages were not significantly different from those in the normal control group, the median expression level of DICER1 in patients with NPC at all stages was lower than that in the normal control group. This evidence concerns the gene DICER1 and nasopharyngeal carcinoma.