The gallbladder triangle is a triangular area consisting of the cystic duct, the common hepatic duct, and the dirty surface of the liver, called the gallbladder triangle, also called Calot’s triangle, Carlo’s triangle, within which the gallbladder artery originating from the right hepatic artery often passes through and the lymph nodes of the neck of the gallbladder can be seen. The gallbladder triangle is a major clinical anatomical landmark in which the cholecystic artery is searched for during cholecystectomy and ligated and severed, and it is important to identify it clearly without injuring the thicker right hepatic artery, which may result in a lethal hemorrhage, or ligation, which may result in ischemia of the right half of the liver. Special attention should be paid to the fact that the gallbladder artery has been mutated, and this triangle is a highly susceptible site for surgical malpractice, and the surgeon has to learn the anatomy of this place very attentively.