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Retrograde intrarenal surgery (RIRS) is the recommended treatment for renal stones up to two cm in size. As digital health literacy (e-HL) has become increasingly important in promoting informed health decisions and healthy behaviors, it is necessary to investigate its impact on RIRS treatment outcomes. We aimed to explore the influence of patients' e-HL level on their postoperative quality of life (QoL). We conducted an observational prospective study of 111 patients who underwent RIRS for renal pelvis stones. Before RIRS, we evaluated patients' e-HL using the electronic health literacy scale (eHEALS). QoL was evaluated using the five-level EuroQol five-dimensional questionnaire (EQ-5D-5L) one month after RIRS. SFR was determined by a negative CT scan or asymptomatic patients with stone fragments < 3 mm. Adult individuals aged 18 years or older with typical calyceal anatomy met the eligibility criteria for enrollment. Exclusion criteria for the study included patients with ureteric stones, anomalous kidneys, or bilateral renal stones. The relationship between patients' QoL and stone-free rate was explored using Spearman's rank correlation coefficient. The mean stone burden was 14 ± 3 mm (6-19 mm). The overall SFR was 83.3% after one month. The median EQ-5D-5L utility index and VAS score were 0.826 (0.41-1) and 70 (20-100) respectively, for the overall population. We found that poorer e-HL was associated with being older (p = 0.035), having less education (p = 0.005), and not having access to the internet (p < 0.001). A significant difference was observed between patients with sufficient e-HL and patients with limited e-HL in the self-care (p = 0.02) and anxiety/depression (p = 0.021) dimensions. To date, no study has examined the impact of patients' e-HL levels on postoperative QoL in patients undergoing RIRS. This study also revealed that e-HL levels in patients undergoing RIRS were related to postoperative QoL, especially self-care and anxiety/depression dimensions, whereas there was no relationship between them and SFR., (© 2024. The Author(s).)