The hepatic artery is a continuation of the innominate hepatic artery, and at the same time, the hepatic artery includes not only the branches of the innominate hepatic artery, but also the vagus hepatic artery, which is the origin of other arteries. 1. The innominate hepatic artery: together with the common hepatic duct and the hepatic portal vein, the innominate hepatic artery forms the “hepatic portal”. The innominate hepatic artery originates from the celiac trunk artery, which divides into the left gastric artery, the splenic artery and the branch of the common hepatic artery, which divides into the right gastric artery, the gastroduodenal artery and the branch of the innominate hepatic artery, and the latter divides into the left and right hepatic arteries before entering the liver, which are distributed in the left and right halves of the liver, respectively. 2. Vagus hepatic artery: The hepatic artery that originates outside the innominate hepatic artery is called vagus hepatic artery. Those distributed to the left half of the liver are mostly from the left gastric artery, and those distributed to the right half of the liver are mostly from the superior mesenteric artery. For questions about the hepatic artery and the innominate hepatic artery, it is advisable to consult a specialist hepatobiliary surgeon.