Based on the analysis of China's traffic infrastructure investment and financing in Kazakhstan, the paper holds that with the construction of the“Silk Road Economic Belt”, China attaches great importance to investment in transport infrastructure in Kazakhstan, which ranks first in the world. The two countries'interconnection have greatly improved, but there are still some problems,including investment fields being relatively concentrated; investment body being not reasonable; investment and financing channels being single; lack of communication and dialogue mechanism in the process of investment. Therefore, it suggests that the investment in non-resource sectorsshould be expanded,diversified investment body should be introduced, financing channels should be broadened, investment and financing electronic information platform should be set up for transportation infrastructure projects, the communication between the two sides should be strengthened topromote China's traffic infrastructure investment and financing in Kazakhstan.