This book introduces the basic knowledge about pathologic anatomy, which covers the the etiology, pathogenesis, pathological changes and outcomes of diseases. It will help the student to understand and master the nature of various diseases and the theories in occurrence and development. This book consists of 18 chapters, including 6 chapters in general pathology and 12 chapters in systematic anatomy. In each chapter, it starts from the most important 'Key Concepts' to learn, which will guide the student during the learning stage and review stage. This book is a useful textbook for graduate and undergraduate students in medical schools, including MBBS (Bachelor of Medicine and Bachelor of Surgery) student.