Super minimally invasive stepwise full-thickness resection (sft-SMIR) is a novel endoscopic technique developed under the guidance of the super minimally invasive surgery concept.This procedure follows a technical sequence of 'double marking, stepwise resection, suturing while resecting, and muscle layer closure’ to achieve en bloc resection of early gastric cancer while maximally preserving the gastric wall anatomy.Based on preliminary clinical research findings, this specification comprehensively introduces the indications, contraindications, preoperative evaluation, standardized surgical procedures, postoperative management, and efficacy evaluation system for sft-SMIR in early gastric cancer.It aims to promote the standardized application of this technique and provide guidance for clinical practice.