All of anatomic variants of the biliary tract were classified. Results: Anatomic variants of the biliary tract included' type I (67.6%): the bile ducts are unique on the right and left; type II (30.6%): 2 biliary ducts on the left or 2 biliary ducts on the right; type III (0%): 3 biliary ducts on the left or 3 biliary duct on the right; type IV (J. 8%): 2 biliary ducts on the left and 2 biliary ducts on the right.