Crohn's disease is an inflammatory bowel disease that commonly leads to complications such as intestinal obstruction, acute perforation, rectal bleeding, and poor absorption syndrome due to intra-abdominal abscesses. Due to inflammation, there is an increase in intestinal mucosa and narrowing of the intestinal lumen, which makes intestinal obstruction more likely. The decrease in protective barrier function of the intestinal mucosa makes it susceptible to acute perforation, which can also lead to rectal bleeding when perforated. Examinations for Crohn’s disease include colonoscopy, barium enema, CT scans, complete blood count, and intestinal absorption tests. The treatment involves a combination of medication and surgery, as the exact cause of the disease is not very clear, and it tends to have a prolonged course with recurrent flare-ups, making it difficult to cure completely.