Caiyu is a town situated in the eastern portion of the Daxing District in Beijing, China. It serves as a populated locality within the municipal region, bordered by several neighboring administrative areas.
The town shares its northern borders with Majuqiao Town and Yujiawu Hui Ethnic Township, while its eastern border meets Yongledian Town. To the south, it is adjacent to Wanzhuang Town and the Langfang Economic Development Area, and its western boundary lies along Changziying Town. As of 2020, the population of Caiyu was recorded at 54,690.