【Purpose/significance】 Using descriptive statistics and difference-in-differences model, we summarize and analyze the ef⁃

fectiveness of the Project for Enhancing International Impact of China STM Journals in multiple dimensions, and provide reference for journal construction and related funding projects in the future.【Method/process】 Taking the Chinese Science and Technology Journal Citation Reports from 2011 to 2018 as the data source, we used the difference-in-differences model to systematically explore the changes in the influence and attractiveness of English sci-tech journals funded by the Project for Enhancing International Impact of China STM Journals and the impact of the withdrawal of funding, and analyzed the differences in the funding effects of different fund⁃ing levels.【Result/conclusion】The impact of the funding program on some journals is not obvious, but there is a causal relationship be⁃tween the funding program and the attractiveness of journals.【Innovation/limitation】Difference-in-differences model is introduced into journal policy analysis to explore the effectiveness of funding in multiple dimensions. In the future, we can study the different funding effects of journal policies on different disciplines.