This paper is based on 2006-2017 relevant data of 56 countries along the “Belt and Road” to find out the investment effect of cultural </span></span><a name="_Hlk42698899"></a><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">“going out</span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">”. The empirical results show that: cultural “going out” has a significant promotion effect on China’s foreign direct investment;this effect has national heterogeneity, which is more effective for emerging markets and developing countries;for some traditional influence factors, such as traditional GDP per capita and time for diplomatic relations, cultural “going out” has a substitution effect. Finally, according to the empirical results, put forward targeted suggestions.