The compilation of this set of teaching materials reflects the relevant national policies on standardized training of resident physicians, complies with the general principles and details of the "Standardized Training Standards for Resident Physicians (Trial)" promulgated by the National Health Commission, and combines the resident training assessment syllabus (theory and clinical practice) to strive for excellence. , To create a national quality textbook for post-graduation medical education and training with Chinese characteristics; to highlight the characteristics of post-graduation education, to create a "stem cell textbook" for my country's post-graduation medical education; to embody comprehensiveness and standardization, and to create training materials that are targeted, practical and applicable. Emphasize innovation and comprehensiveness, improve readability, and establish a comprehensive view of teaching materials, making the construction of teaching materials an important driving force for the development of residential training.