List of four medical journals: 1, New England Journal of Medicine (NEM). 2. The Lancet. 3. Journal of American Medical Association. 4. British Medical Journal (BMJ). As four major journals in the medical field, its medical academic articles are world-renowned. Extended data 1, New England Journal of Medicine (NEM). New England Journal of Medicine; The New England Journal of Medicine is a peer-reviewed general practice weekly published by the Massachusetts Medical Association. Its 20 15 year impact factor (IF) is 55873. The contents of the journal include a series of new medical research achievements, review articles and editorials on a series of topics of great significance to biomedical science and clinical practice. 2. The Lancet. The Lancet magazine contains original research articles, summary articles (group discussions and comments), editorials, book reviews, short research articles and other articles frequently published in the magazine, such as special issues and case reports. Its 20 15 year impact factor (IF) is 452 17. 3. Journal of American Medical Association. JAMA pays more attention to its educational function, and uses the column of continuing medical education in this journal to provide continuing medical education services for clinicians in basic medicine and clinical medicine. The influence factor (IF value) of this journal in 20 15 years is 35289. 4. British Medical Journal (BMJ). The British Medical Journal (BMJ) is the periodical of the British Medical Association. Its English name is British Medical Journal. 160 years of long history, profound cultural accumulation and unique style is the most comprehensive of all comprehensive medical journals. The impact factor (IF value) of this journal is 20 16378. Its columns are rich and colorful, and articles such as reviews, news, summaries and arguments are well received by doctors. In addition to the information and knowledge closely related to clinical work, it also involves politics, economy, society, education, ethics, public health and many other aspects related to medicine.