在胃癌外科治疗由传统根治切除向根治性与功能保护并重转型的进程中，腹腔镜与内镜联合手术（LECS）凭借定位精准、创伤小、安全可控等优势，已成为早期胃癌保功能手术的核心支撑技术。内镜能够完成病灶精确定位、边界标记、黏膜层剥离与腔内显露，腹腔镜则可实现安全切除、淋巴结评估、胃壁缺损修复与腹腔内探查，二者协同作用可有效解决单一微创技术在病灶定位、切除安全、功能保留与根治保障之间的矛盾，显著减少围手术期并发症、加速术后康复、改善长期生活质量，在严格把握适应证、规范操作流程、强化多学科协作的前提下，可获得与标准胃癌根治术相当的肿瘤学疗效。随着技术不断优化、证据持续完善，双镜联合保功能手术将在早期胃癌治疗中发挥更重要的作用，为病人带来更小的创伤和更好的生活质量。

In the transformation of gastric cancer surgery from traditional radical resection to emphasizing both radicality and function preservation, laparo-endoscopic combined surgery (LECS) has become a core supporting technique for function-preserving gastrectomy in early gastric cancer due to its advantages of precise localization, minimal invasiveness and controllable safety. Endoscopy enables precise lesion localization, boundary marking, mucosal dissection and intraluminal exposure, while laparoscopy achieves safe resection, lymph node evaluation, gastric wall defect repair and intra-abdominal exploration. The synergistic effect of the two modalities effectively resolves the contradictions among lesion localization, resection safety, function preservation and radical guarantee faced by single minimally invasive technique, significantly reduces perioperative complications, accelerates postoperative recovery, and improves long term quality of life. With strict adherence to appropriate indications, standardized procedural protocols, and enhanced multidisciplinary collaboration, it can achieve oncological outcomes comparable to those of standard radical gastrectomy. As the technique continues to be optimized and the clinical evidence matures, combined laparoscopic and endoscopic function-preserving surgery is expected to play an increasingly important role in the management of early gastric cancer, offering patients less surgical trauma and better quality of life.