The article examines how financial service trade in China impacts industrial structure and social welfare. It uses data from 2000 to 2011 to analyze factors influencing intra-industry trade, finding that human capital investment is crucial for development. Income per capita and foreign investment also play a role, with foreign investment taking time to show effects. Market size, goods trade intensity, and trade imbalances have less impact. The study suggests strategies to enhance financial service intra-industry trade in China.