Aim: The study aims to compare the perioperative outcomes, facial nerve function, and complication rates between endoscopic-assisted parotidectomy and conventional open parotidectomy in patients with parotid gland tumors. Materials and Methods: This prospective study included 120 patients diagnosed with benign or malignant parotid gland tumors. Patients were divided into two groups: the endoscopic-assisted parotidectomy group (n=60) and the open parotidectomy group (n=60). Surgical outcomes were assessed based on operative time, blood loss, postoperative pain (VAS score), hospital stay, and complications. Facial nerve function was evaluated using the House-Brackmann grading system at one week, one month, and three months postoperatively. Tumor characteristics and histopathological findings were analyzed, and statistical significance was determined using SPSS version 16.0. Results: The endoscopic group had a significantly shorter operative time (95.4 ± 20.3 min vs. 130.2 ± 25.6 min, p < 0.001) and lower intraoperative blood loss (50.8 ± 15.7 mL vs. 150.4 ± 30.2 mL, p < 0.001) than the open surgery group. Postoperative pain was significantly lower in the endoscopic group (VAS: 2.5 ± 1.1 vs. 4.1 ± 1.3, p < 0.001), and hospital stay was reduced (2.3 ± 0.8 days vs. 4.8 ± 1.2 days, p < 0.001). Facial nerve function was better in the endoscopic group at one week (p = 0.045) and one month (p = 0.038), but at three months, the difference was not statistically significant (p = 0.072). The incidence of temporary facial nerve weakness was significantly lower in the endoscopic group (10.0% vs. 20.0%, p = 0.049), while permanent nerve weakness rates were comparable (p = 0.312). No significant differences were observed in tumor characteristics between the groups. Conclusion: Endoscopic-assisted parotidectomy demonstrated superior perioperative outcomes with reduced operative time, blood loss, hospital stay, and postoperative pain. Early facial nerve function recovery was better, with lower temporary facial nerve weakness and complication rates compared to open parotidectomy. However, open surgery remains essential for larger or deep-lobe tumors requiring extensive dissection. Further studies are needed to evaluate long-term oncological safety and broader applicability of endoscopic techniques.