Overseas economic and trade cooperation zones not only promote China's export trade and foreign direct investment,but also enhance the economic development and people's welfare of host country.As a foreign investment project,the cooperation zone has a significant impact on the economy,society,culture and environment of host country during its own develop-ment.Therefore,the research on the multi-radiation effects of China's overseas economic and trade cooperation zones is of great significance.The paper constructs a theoretical framework of multi-radiation effects of China's overseas economic and trade cooperation zone,and takes Nige-ria's Lekki Free Trade Zone as an example to explore the paths and comprehensive effects of multi-radiation generated by zones.The results show:① China's overseas economic and trade cooperation zones have multi-radiation effects on the host country in terms of economy,culture,technology and society.The four radiation effects are closely related to each other,and jointly fa-cilitate the economic and social development of host country.②The radiation effects of Lekki Free Trade Zone show significant differences in different dimensions,among which the econom-ic,cultural and social radiation effects are favorable,but the technology radiation effects are not prominent.The technology radiation depends on the two-way matching between the park and the host country.③ In order to better play the multi-radiation effects of overseas economic and trade cooperation zones,the cooperation zones should be further improved in industrial develop-ment,cultural exchange,technology spillover,construction of people's livelihood and so on.