Objective To study the clinical efficacy and safety of detachable titanium clip combined with rubber band intracavity dual traction assistance in endoscopic treatment of gastric submucosal tumors (SMT).Methods 52 patients who underwent endoscopic submucosal excavation (ESE) or endoscopic full thickness resection (EFR) for gastric SMT from January 2022 to July 2024 were selected. 27 patients using the detachable titanium clip combined with rubber band intracavity dual traction assistance ESE or EFR were selected as experimental group, and 25 patients using the traditional ESE or EFR were selected as control group. Operation time, hospital stay, hospital cost, one time complete excavation rate and complication rates were compared between the two groups.Results The operation time and hospital stay in the experimental group were significantly shorter than those in the control group, and the hospital cost was also significantly lower, with all differences being statistically significant (P < 0.05). The comparison of surgical complication rates between the two groups showed a statistically significant difference (P < 0.05), with the experimental group having significantly lower total complication rates than that in the control group. However, there was no statistically significant difference (P > 0.05) in the rate of one-time complete excavation between the two groups.Conclusion The detachable titanium clip combined with rubber band intracavitary dual-traction-assisted endoscopic treatment for gastric SMT significantly shortens the operation time and hospital stay, reduces hospital costs and surgical complications. It is a simple, effective auxiliary device that worthy for clinical application.