Abstract: <b<Objective</b< To analyse the CT misdiagnosed causes of gallbladder carcinoma. In order to improve diagnostic state. <b<Methods</b< 43 patients with the gallbladder carcinoma were examined by computed tomography (CT), 23 of them were misdiagnosed. The misdiagnosed causes were analysed and compared with CT images operation. <b<Results:</b< In the case of misdiagnosis they were diagnosed as acute and chronic cholecystitis in 5; gallbladder polyp in 1; bile duct carcinoma in porta in 2;bile duct carcinoma in 1; neoplasm of distal part of common bile duct or ampulla in 3; carcinoma of head of pancreas in 5;cholangitis in 1; jaundice of obstruction in 2; turgescence of gallbladder in 2; carcinoma of colon in 1. <b<Conclusion:</b< To be aware of CT characters of gallbladder carcinoma and the way of metastasis is useful to avoid misdiagnosis of the gallbladder carcinoma and to improve the diagnostic accuracy.