2. On-site trading refers to stock trading through the stock exchange. A stock exchange is a place with a fixed site and various service facilities (such as quotation board, TV screen, computer, telephone, telex, etc.). ), necessary management and service personnel, and centralized trading of stocks and other securities. The stock trading in this place is called floor trading. At present, in all countries of the world, most stock circulation and transfer transactions are carried out in stock exchanges. Therefore, the stock exchange is the core of the stock circulation market, and floor trading is the main organization mode of stock circulation.