Small incision lenticule extraction (SMILE) surgery is a brand-new concept and treatment that uses excimer laser for refractive corneal surface or stromal ablation. To obtain a satisfactory outcome and provide comfort for the majority of the patients with ametropia, it is particularly important to understand and correctly apply the operational mode of the laser. To provide references for SMILE surgery clinical safety implementation and steady development, this article interprets the consensus of SMILE surgery outcomes obtained in clinical practice and further explores the connotation and clinical significance of the practical applications of this new surgical modality.