【Abstract】Objective To investigate the postoperative gastrointestinal dysfunction in the elderly patients with gastrointestinal tumor and analyze its influencing factors. Methods The clinical data of 185 patients with gastrointestinal tumors admitted to Heji Hospital Affiliated to Changzhi Medical College from May 2020 to May 2023 were retrospectively analyzed. The gastrointestinal function of the patients was evaluated according to intake, feeling nauseated, emesis, physical exam and duration of symptoms (I-FEED) scoring system. The I-FEED score < 6 or≥ 6 points represented the recovery group (n=105) and the delayed recovery group (n=80). SPSS statistics 20.0 was used for data analysis. According to the data type, the t test, ANOVA, or χ2test was selected for inter-group comparison. Multiple logistic regression was used to analyze the influencing factors of postoperative gastrointestinal dysfunction. Results The I-FEED score of 185 patients was (4.26±1.04) points, and the incidence of delayed gastrointestinal function recovery was 43.24% (80/185). Multiple logistic regression analysis showed that body mass index (OR=1.868,95%CI 1.235-2.825), preoperative albumin (OR=0.643,95%CI 0.455-0.908), intraoperative blood loss (OR=1.680,95%CI 1.044-2.705) and abdominal fluid (OR=1.449,95%CI 1.063-1.975) were the factors affecting postoperative gastrointestinal function recovery (P<0.05). Conclusion The elderly patients with gastrointestinal tumors are more prone to delayed recovery of gastrointestinal function after surgery. Patients with high body mass index, low preoperative albumin, intraoperative massive bleeding and abdominal fluid are high-risk groups for gastrointestinal dysfunction, and targeted intervention is needed to promote rapid recovery of gastrointestinal function after surgery.