Infectious diseases are very common in clinical practice and are often faced by doctors. However, at present, there are widespread misunderstandings in the diagnosis and treatment of infectious diseases, which makes the clinical infection problem more complicated and serious. The prevalence of bacterial drug resistance caused by changes in bacterial sensitivity, irrational clinical application, non-standard and overuse of new technologies and methods makes the treatment of infectious diseases and hospital infection control face great challenges. In order to improve the level of diagnosis and treatment of infectious diseases in primary hospitals, especially in the department of infectiology, respiratory and critical care medicine, intensive care unit (ICU) and other multidisciplinary medical staff have a new understanding of standardized diagnosis and treatment of infectious diseases and rational use of antibiotics; Further improve the awareness of the importance of the construction of infectious diseases department, strengthen the supervision and management of infectious diseases department in the jurisdiction