Objective To explore the feasibility and safety of component separation technique (CST) in the laparoscopic treatment of gastric stromal tumor (GST) around the cardia.Methods Clinical data and follow-up results of 20 patients who underwent laparoscopic resection with CST in the treatment of GST around the cardia from January 2020 to June 2023 were retrospectively analyzed.Results All the 20 patients underwent surgery successfully without conversion to open surgery.The operative time was (90.5±18.9) min,the intraoperative blood loss was (22.0±14.7) ml,the postoperative ambulation time was (1.2±0.4) d,the first flatus time was (2.1±0.8) d,and the postoperative hospital stay was (5.7±1.2) d.Postoperative pathological results showed very low risk in 1 case,low risk in 14 cases,intermediate risk in 4 cases,and high risk in 1 case.The maximum tumor diameter was (3.6±0.9) cm.Postoperatively,1 patient experienced gastric emptying dysfunction and 1 had pleural effusion,both of whom were cured after active conservative treatment.There were no cardiac stenosis,gastric leakage,gastric bleeding,abdominal bleeding,incision infection,or other complications.All the patients were followed up for 6-36 months ( mean,15 months).They were able to eat normally,without choking,acid reflux,heartburn,or reflux symptoms.The CT scanning showed no tumor recurrence or metastasis.Conclusion Application of CST in the laparoscopic treatment of GST around the cardia is safe and feasible.