Objective To explore the clinical value of modified open-wound sutureless labial gland biopsy for patients with Sjögren syndrome. Methods A total of 24 patients who underwent labial gland biopsy in our department from March 2023 to April 2025 were divided into the sutureless labial gland biopsy (SLSGB) group and the traditional labial salivary gland biopsy (TLSGB) group. The numerical rating scale (NRS) 0-10 was used to evaluate the postoperative recovery time and incision pain at 2 h, 1 d, and 7 d after surgery in both groups. Results The postoperative recovery time score was (6.67±0.82) points in the TLSGB group and (2.00±0.00) points in the SLSGB group (P< 0.001). The NRS scores at 2 h, 1 d, and 7 d after surgery were (5.83±0.98), (2.67±0.52), and (2.00±0.63) points in the TLSGB group, and (1.72±0.46), 0, and 0 points in the SLSGB group, respectively. There were significant differences between the two groups at 2 h and 1 d after surgery (both P<0.05), but there was no statistical difference at 7 d after surgery (P>0.05). Conclusions Open incision labial gland biopsy is less invasive, less prone to secondary injury, does not require suture removal, is easy to operate, and rarely causes complications. It can reduce significantly the economic and time costs and it’s more easily accepted by patients.