Based on four longitudinal evaluation reports of the China-England Mathematics Teacher Exchange (MTE) and related materials provided by the Chinese and English program teams, this article analyzes the impact of the MTE on English mathematics education. Certain positive impacts on mathematics teaching in England were found, especially regarding the formation of new knowledge concepts, the sharing of teachers' professional knowledge and the generation of practical knowledge. Furthermore, as a platform for two-way communication and cooperation between the two countries in teaching resources, the MTE program has proven to be an innovative way for the sharing of educational resources. Moreover, as the program improves and develops, its impacts on mathematics education in Western countries and beyond will continue to grow.