Objective：To explore the methods for diagnosis and treatment of tumors at bifurcation of carotid artery. 
Methods：We retrospectively analyzed the clinical data of 11 cases of tumors at bifurcation of carotid artery who admitted in our hospital from February 2004 to November 2007. 
Results：Seven of the 11 cases were carotid body tumors of which six underwent operation and one case refused surgical treatment. The other 4 cases were neurinoma and underwent operation. All of the 10 operated patients had total tumor resection; 2 of them had reconstruction of carotid artery using great saphenous vein graft.  Six operated patients were followed up for 0.5-6 years, the results were good.
Conclusions：Exact diagnosis of tumors at bifurcation of carotid artery, especially the differential diagnosis of carotid body tumor and neurinoma, is diffecult. A clear understanding of the relationship between the tumor and the blood vessels and the condition of Willis circle is necessary before operation, and equally important is ensuring the blood supply from internal carotid artery and protecting nerves during the procedure of the operation.