Objective:To evaluate the value of double balloon endoscopy in the diagnosis of small intestinal tumors.Methods: Totally 253 patients with unexplained gastrointestinal symptoms from December 2004 to December 2009 were examined by double-balloon endoscopy.Results:Eighty-two (32.41%) cases were diagnosed as small intestinal tumor

most of which suffered from gastrointestinal bleeding

abdominal bloating and pain

fewer experienced the symptoms of chronic diarrhea

vomiting and incomplete obstruction.Of the 82 cases

there were 44 cases of stromal tumors with 29 cases being malignant

12 cases of vascular tumor

8 cases of tubular adenoma

5 cases of smooth muscle tumors

5 cases of B cell lymphoma

3 cases of leiomyosarcoma; 2 cases of fat tumor and metastatic mucinous carcinoma respectively and 1 case of melanoma.Re examination of the entire small intestine was performed on some cases during the surgery

four of which were found to have multiple lesions

accounting for 6.66%.Conclusion:Double balloon endoscopy can improve the diagnostic accuracy for small intestinal tumors.