Abstract: By exploring the number of TOP journals,division changes of The World Journal Clout Index （WJCI） Report of Scientific and Technological Periodicals,the inclusion of journals in databases,the international communication status of Chinese scientific journals selected into the Excellence Action Plan for China STM Journals was analyzed,in order to comprehensively understand the improvement of the international influence of Chinese scientific journals. The study found that compared with the non-selected Chinese scientific journals,the number of TOP journals changed relatively little;the number of rising journals was significantly higher than that of declining journals in WJCI,and the number of journals with cross-disciplinary improvement was more obvious;most excellent Chinese scientific journals were included in domestic authoritative database,while a few were included by international databases,and the rankings were low. The Excellence Action Plan for China STM Journals has promoted the development of a number of Chinese scientific and technological journals,but there is still a lack of first-class scientific and technological journals with high international influence. Therefore,some suggestions to improve the international influence of Chinese scientific journals under the current development situation of scientific journals are put forward,including：continuously strengthening the policy support and increasing the support of first-class journals;increasing the dissemination platform and improving the dissemination width of Chinese journals;speeding up the dissemination of scientific and technological achievements to improve the service capacity,in order to provide reference for the promotion of the international influence of Chinese scientific and technological journals.

Key words: Chinese scientific journals, Excellence Action Plan for China STM Journals, international influence, suggestions for improvement