The full name of SCI is Science Citation Index, which is an international scientific and technological literature retrieval and evaluation tool. IF refers to the impact factor of SCI journals, which is a commonly used evaluation index of SCI journals. IF reflects the ratio of the number of citations to the number of articles published in journals in recent two years.

IF is one of the important performance indicators of SCI journals, which can measure the influence and academic quality of journals. A journal with high IF represents that its research results are highly recognized by the academic circles and have great influence in the academic circles. Therefore, many authors will choose to contribute to SCI journals with high IF to improve their academic prestige and influence.

Although IF is one of the evaluation indexes of SCI journals, it is not the only standard. When choosing SCI journals to contribute, the author should also pay attention to whether the research field of journals conforms to his own research direction, whether the quality of papers meets the requirements of journals, and the publishing cycle of journals. Only by comprehensively considering various factors can we choose the most suitable SCI journals to contribute.