As the intraoperative ultrasound, being described as the “third eye” of liver surgeons, has been applied more widely, it is an increasingly urgent task to establish and to help more surgeons master the intraoperative ultrasound technology and complete liver surgery accurately through the training system for hepatobiliary surgical specialists. This book mainly elaborates on the intraoperative ultrasound and drawing training, fine anatomy, 3D reconstruction, anatomical liver resection, and basic operations of intraoperative ultrasound in Japanese liver surgery from the perspective of surgeons learning.