影响因子（英文：Impact Factor），简称IF，是汤森路透（Thomson Reuters）出品的期刊引证报告（Journal Citation Reports，JCR）中的一项数据。即某期刊前两年发表的论文在该报告年份（JCR year）中被引用总次数除以该期刊在这两年内发表的论文总数。这是一个国际上通行的期刊评价指标。
影响因子现已成为国际上通用的期刊评价指标，它不仅是一种测度期刊有用性和显示度的指标，而且也是测度期刊的学术水平，乃至论文质量的重要指标。影响因子是一个相对统计量。
（来自百度百科）
又到了一年一度的SCI影响因子公布的时间了，最引人关注的当然是神刊 CA-A CANCER JOURNAL FOR CLINICIANS，影响因子突破500达到了惊人的508.7，不可不谓之增长迅速！紧随其后的分别是NATURE REVIEWS MOLECULAR CELL BIOLOGY和NEW ENGLAND JOURNAL OF MEDICINE，影响因子均为90多，破百指日可待！
除了Top3的神刊外，科研人员关注的三大主刊CNS，NATURE为49.96,SCIENCE 为47.73，CELL为41.58，相比上一年均有了不同程度的提高，尤其是NATURE增长了7以上。
Top100一览
Rank | Full Journal Title | Total Cites | Journal Impact Factor |
|---|---|---|---|
1 | CA-A CANCER JOURNAL FOR CLINICIANS | 55,868 | 508.702 |
2 | NATURE REVIEWS MOLECULAR CELL BIOLOGY | 58,477 | 94.444 |
3 | NEW ENGLAND JOURNAL OF MEDICINE | 464,351 | 91.245 |
4 | NATURE REVIEWS DRUG DISCOVERY | 41,989 | 84.694 |
5 | LANCET | 369,601 | 79.321 |
6 | Nature Reviews Clinical Oncology | 17,973 | 66.675 |
7 | Nature Reviews Materials | 19,887 | 66.308 |
8 | Nature Energy | 28,166 | 60.858 |
9 | NATURE REVIEWS CANCER | 62,391 | 60.716 |
10 | NATURE REVIEWS MICROBIOLOGY | 43,313 | 60.633 |
11 | CHEMICAL REVIEWS | 224,417 | 60.622 |
12 | MMWR Surveillance Summaries | 3,806 | 58.769 |
13 | JAMA-JOURNAL OF THE AMERICAN MEDICAL ASSOCIATION | 224,147 | 56.272 |
14 | MMWR Recommendations and Reports | 3,288 | 55.857 |
15 | NATURE BIOTECHNOLOGY | 78,786 | 54.908 |
16 | CHEMICAL SOCIETY REVIEWS | 173,170 | 54.564 |
17 | REVIEWS OF MODERN PHYSICS | 58,097 | 54.494 |
18 | NATURE MEDICINE | 114,401 | 53.44 |
19 | NATURE REVIEWS GENETICS | 42,803 | 53.242 |
20 | NATURE REVIEWS IMMUNOLOGY | 55,784 | 53.106 |
21 | Nature Reviews Disease Primers | 14,221 | 52.329 |
22 | NATURE | 915,925 | 49.962 |
23 | World Psychiatry | 9,619 | 49.548 |
24 | SCIENCE | 814,971 | 47.728 |
25 | Nature Reviews Gastroenterology & Hepatology | 15,358 | 46.802 |
26 | JOURNAL OF CLINICAL ONCOLOGY | 189,443 | 44.544 |
27 | LANCET NEUROLOGY | 43,457 | 44.182 |
28 | NATURE MATERIALS | 112,429 | 43.841 |
29 | Nature Reviews Endocrinology | 15,040 | 43.33 |
30 | Nature Reviews Neurology | 15,738 | 42.937 |
31 | Nature Catalysis | 9,725 | 41.813 |
32 | CELL | 320,407 | 41.582 |
33 | LANCET ONCOLOGY | 72,804 | 41.316 |
34 | Joule | 17,275 | 41.248 |
35 | Living Reviews in Relativity | 3,407 | 40.429 |
36 | BMJ-British Medical Journal | 158,747 | 39.89 |
37 | PROGRESS IN MATERIALS SCIENCE | 21,332 | 39.58 |
38 | Cancer Discovery | 27,030 | 39.397 |
39 | Nature Nanotechnology | 75,845 | 39.213 |
40 | Nature Photonics | 52,833 | 38.771 |
41 | Energy & Environmental Science | 101,688 | 38.532 |
42 | NATURE GENETICS | 113,066 | 38.33 |
43 | PHYSIOLOGICAL REVIEWS | 35,633 | 37.312 |
44 | MATERIALS SCIENCE & ENGINEERING R-REPORTS | 8,652 | 36.214 |
45 | NATURE REVIEWS NEUROSCIENCE | 49,897 | 34.87 |
46 | Nature Reviews Chemistry | 5,750 | 34.035 |
47 | Nature Electronics | 4,455 | 33.686 |
48 | ANNALS OF ONCOLOGY | 61,542 | 32.976 |
49 | Nature Reviews Cardiology | 11,539 | 32.419 |
50 | Lancet Diabetes & Endocrinology | 14,024 | 32.069 |
51 | JAMA Oncology | 22,382 | 31.777 |
52 | IMMUNITY | 70,517 | 31.745 |
53 | CANCER CELL | 50,839 | 31.743 |
54 | Nature Reviews Physics | 1,697 | 31.068 |
55 | Materials Today | 20,082 | 31.041 |
56 | ADVANCED MATERIALS | 320,972 | 30.849 |
57 | Lancet Respiratory Medicine | 22,278 | 30.7 |
58 | Annual Review of Astronomy and Astrophysics | 13,229 | 30.065 |
59 | EUROPEAN HEART JOURNAL | 81,447 | 29.983 |
60 | CIRCULATION | 190,210 | 29.69 |
61 | PROGRESS IN ENERGY AND COMBUSTION SCIENCE | 14,154 | 29.394 |
62 | Advanced Energy Materials | 93,801 | 29.368 |
63 | PROGRESS IN POLYMER SCIENCE | 30,309 | 29.19 |
64 | Electrochemical Energy Reviews | 1,341 | 28.905 |
65 | NATURE CELL BIOLOGY | 52,554 | 28.824 |
66 | NATURE METHODS | 90,805 | 28.547 |
67 | Annual Review of Immunology | 20,292 | 28.527 |
68 | Nature Reviews Nephrology | 10,033 | 28.314 |
69 | Molecular Cancer | 24,931 | 27.401 |
70 | Cell Metabolism | 52,192 | 27.287 |
71 | Lancet Psychiatry | 14,839 | 27.083 |
72 | Lancet Global Health | 16,662 | 26.763 |
73 | Annual Review of Plant Biology | 24,641 | 26.379 |
74 | CLINICAL MICROBIOLOGY REVIEWS | 25,627 | 26.132 |
75 | Journal of Extracellular Vesicles | 8,485 | 25.841 |
76 | Nature Biomedical Engineering | 6,476 | 25.671 |
77 | CELL RESEARCH | 24,108 | 25.617 |
78 | NATURE IMMUNOLOGY | 54,588 | 25.606 |
79 | PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS | 32,130 | 25.6 |
80 | PHARMACOLOGICAL REVIEWS | 14,442 | 25.468 |
81 | InfoMat | 1,460 | 25.405 |
82 | ANNALS OF INTERNAL MEDICINE | 72,588 | 25.391 |
83 | ADVANCES IN PHYSICS | 6,300 | 25.375 |
84 | ASTRONOMY AND ASTROPHYSICS REVIEW | 2,048 | 25.357 |
85 | Nature Climate Change | 36,321 | 25.29 |
86 | IEEE Communications Surveys and Tutorials | 22,146 | 25.249 |
87 | Wiley Interdisciplinary Reviews-Computational Molecular Science | 7,883 | 25.113 |
88 | JOURNAL OF HEPATOLOGY | 52,238 | 25.083 |
89 | LANCET INFECTIOUS DISEASES | 42,483 | 25.071 |
90 | NATURE NEUROSCIENCE | 73,709 | 24.884 |
91 | Cell Stem Cell | 32,147 | 24.633 |
92 | Lancet Digital Health | 1,260 | 24.519 |
93 | Nature Chemistry | 41,139 | 24.427 |
94 | Annual Review of Psychology | 28,065 | 24.137 |
95 | JOURNAL OF THE AMERICAN COLLEGE OF CARDIOLOGY | 125,873 | 24.094 |
96 | Trends in Chemistry | 1,919 | 24.081 |
97 | Science Robotics | 4,176 | 23.748 |
98 | Annual Review of Biochemistry | 24,394 | 23.643 |
99 | Annual Review of Pathology-Mechanisms of Disease | 6,874 | 23.472 |
100 | ACS Energy Letters | 30,194 | 23.101 |
