Objective To explore the application value of painless gastroscope in the removal of foreign body in upper gastrointestinal tract. Methods The study involved patients who visited at the department of endoscopy center at Hospital (Dongguan, China). Retrospective analysis of patients undergoing endoscopic removal of foreign bodies in the upper gastrointestinal tract from May 1, 2017 to May 1, 2020. We analyzed the patients' clinical data and compared the diagnosis and treatment effect between the painless gastroscope group and normal gastroscopy group. Results A total of 357 patients were included, 372 times of removal of foreign body under gastroscope were conducted. A total of 99 cases in painless gastroscope group were treated by painless gastroscope with painless sedation, 273 cases in normal gastroscopy group were treated by normal gastroscopy, among them, 15 cases were failed to removal the foreign body treated by normal gastroscopy, and turned into the painless sedation gastroscopy. Finally, 10 patients with foreign bodies were not removed and transferred to surgical department or higher level hospitals. In the treatment of endoscopic foreign body removal, the success rate of painless gastroscope group was higher (P<0.05), the complication incidence of mucosal injury, bleeding and perforation and cost per capita were lower than that of normal gastroscopy(P<0.05). Following painless sedation, the blood oxygen saturation, blood pressure dropped (P<0.05) and heart rate increased (P<0.05), the effect of the sedatives on the elderly was the most obvious (P<0.05), but it did not affect the patient's endoscopic operation, and the heart rate, blood oxygen saturation and blood pressure (P>0.05) after awakening. Conclusion Painless gastroscope in the removal of foreign body in upper gastrointestinal tract is safe, effective high success rate, less medical cost, and easy for patients to accept, it should be widely applied.