Abstract: By the criteria of National income level, this paper classifies the 177 countries into 5 groups.Using gravity model and PPML method and combined with the cross sectional data of bilateral export trade value in 2014, this paper estimates the relationship between trade facilitation and export trade value.The results show that 1) trade facilitation exerts the positive effects to all countries' export; 2)The lower national income level, the higher trade facilitation effect. The descending order is low income countries, low-middle income countries, high-middle income countries and high income countries: OECD. Hence the verification of the applicability of the late-developing advantage is confirmed in the trade facilitation.At the end of this paper, the way of improving trade facilitation are brought forward for the countries, especially for the low and low-middle income countries.

Key words: gravity model, trade facilitation, PPML, country effect, late-developing advantage