Common bile duct stones (CBD) are found in 6 to 12% of patients with stones in the gallbladder. The incidence increases with age. These may be silent and are often discovered incidentally. The most common presentation is fever, epigastric or right upper quadrant pain, and jaundice. These classic symptoms are present in about two thirds of patients. Main complications of choledochal stones are cholangitis, gallstone pancreatitis and obstructive jaundice. The purpose of this study is to evaluate the incidence and aetiopathogenesis of Common Bile Duct stone in Southern part of Odisha, India.