Report of two cases of multiple diverticula of the jejunum membrane, with a diverticulum opening 2 cm in diameter, filled with food residues and intestinal juice, with partial bezoar formation a few months ago. Pathology report: duodenal diverticulitis of the jejunum, jejunal diverticulum perforation with necrotic tissue. Postoperative secondary intestinal space abscess underwent surgical drainage and was cured. Rare discharge of multiple jejunal diverticula post-surgery. The clinical pathogenesis is unclear. No specific clinical features; fecal occult blood positive only occurs during diverticulum bleeding or inflammation. Small diverticulum opening filled with intestinal contents and food residues. Barium has difficulty entering the developing diverticulum during barium enema. Pre-surgical diagnosis is difficult, often discovered during laparotomy or other surgical complications. For example, case 2 was confirmed during diffuse peritonitis line probe fraud; compared to case 1 where the duodenal diverticulum was resected. For diverticular perforation and other serious complications, simply remove the diseased bowel. When the diverticulum perforates causing peritonitis, especially in Taiwan and duodenal diverticulum resection, surgery becomes more difficult due to inflammation, adhesions, mesenteric lymphadenitis, and abscesses. For the jejunum, duodenum, and duodenal areas with less blood supply, anastomosis and fistula are relatively reliable choices. Side-to-side anastomosis is considered relatively reliable.