Employing the spatial econometric model, the panel data was utilied from 41 cities in the Yangtze River Delta spanning the years 2006 to 2015 as its research sample. The influence of digital economy on the quality of urban export products was analyzed. The results show that there is a positive spatial correlation between the quality of export products on the whole, and the digital economy can significantly improve the quality of export products in cities. This conclusion is still valid in the robustness test. The mechanism test shows that the digital economy promotes technological innovation, improves the quality of imported intermediate products, promotes the high-end structure of export products, and then improves the quality of urban export products. Heterogeneity test show that the digital economy can significantly improve the quality of export products of non-private enterprises, and compared with other cities digital economy plays obvious role in promoting the quality of export products in large and above cities.