The Alignment between “the Belt and Road” initiatives put forward by China and “Eurasia Initiative” put forward by South Korea has many favorable conditions，such as geographical proximity，understanding between people and economic and trade complementarities. However，the deployment of THAAD and the turbulent political situation in South Korea overshadow the further cooperation between the two countries. Besides，investment imbalance between two countries，persistent trade inequality and trade frictions，and imperfect infrastructure are also challenges in their cooperation. From the aspects of promoting investment，improving unimpeded trade，deepening facilities connectivity and strengthening the communication between government and people，China and South Korea could put forward the alignment between “the Belt and Road” initiatives and “Eurasia Initiative”，and further strengthen the friendly and cooperative partnership between the two countries.