At present, the overseas brokerage business of domestic securities companies is mainly concentrated in Hong Kong and the United States. Hongkong is an important bridge between Chinese mainland and the international financial market, and also an important port of China stock market. China securities companies can set up subsidiaries in Hong Kong to provide trading services for investment products such as stocks, bonds and foreign exchange through contact with the Hong Kong securities market. In addition, as one of the largest financial markets in the world, the United States is also an important destination for China securities companies to expand their overseas business. China securities companies can register as brokers in the United States and provide various trading services such as stocks, futures and foreign exchange.