AIM: To define the the role of small bowel length in development of SBS. MATERIAL AND METHODS: Seventeen patients with SBS after small bowel resection in neonatal period were included into the study. Total small bowel length ranged from 5 to 55 cm (11.8±5.59% from normal length for certain age). RESULTS: Described small bowel length has high risk of SBS/IF development irrespective to other factors (specific segment of small bowel that was resected, preserved intestinal segment state, absence of colon and/or ileocecal valve). CONCLUSION: It is required to perform further studies with greater amount of patients to discover exact small bowel length which is associated with SBS and other factors affecting small bowel state.