One hundred and ten patients underwent surgery for congenital intestinal atresia or stenosis, including gastric and duodenal atresia/stenosis, at our hospital from January 1990 to June 2022. Among them, 30 patients had CIA-I/S. Two patients with multiple atresia and two patients whose postoperative course details were uncertain were excluded from this study. Twenty-six patients with CIA-I/S were then divided into 3 groups according to the surgical procedure: Group A, web excision with a pre-membranous incision of the dilated intestine proximal to the atresia (n = 14); Group B, enteroplasty of a trans-membranous vertical incision (n = 7); and Group C, diamond-shaped anastomosis (n = 5). No significant difference was found among the 3 groups in patient demographic information (Table 1). The trans anastomotic tube (TAT) was placed in 7 patients: 4, 2, and 1 in Groups A, B, and C, respectively. We retrospectively compared several clinical parameters related to the surgical procedure and the postoperative course among the 3 groups.