Based on the Chinese industrial enterprises database and customs trade statistics, this study investigates the different impact of migrant networks with different skill level on export product quality. The results show that, the pro-trade effect of skilled migrant networks becomes stronger with the increasing of product quality, and this trend keeps across the processing trade with supplied materials or imported ones, firms invested by FDI or not. While the unskilled migrant networks become weaker with the quality increasing, and this trend mainly appears in the processing trade with imported materials and firms without investing by FDI. The peak of pro-trade effect of skilled migrant networks occurs to the products with the sub-high quality, not the highest one. The above trends mainly present on extensive margin, not intensive one.