Instead of focusing on manual marking and manual operation, foreign exchange traders in many big companies on Wall Street in New York constantly compile and improve their trading strategies, and then compile automatic trading systems for computers to automatically execute. EA's dominant traders use automatic trading system instead of manual trading, which has at least five obvious advantages: advantages 1: risk management and profitability are higher than manual operation. Because the intelligent trading system combines the wisdom and experience of many foreign exchange trading experts, it is equivalent to standing on the shoulders of giants, and its trading strategy selection and market judgment, position control and trading discipline, risk control and profitability will undoubtedly be much higher than manual operation. Advantage 2: Fast speed. Because the computer automatically places orders, it can ensure faster order placing and settlement speed, and can respond to price changes and trend changes more sensitively. Advantage 3: Weakening the weakness of human nature Computers can overcome the weakness of human nature. Just buy it. You can sell it if you sell it. No hesitation, no greed, no arrogance if you win, no depression if you lose, and you can avoid emotional operation. Advantage 4: Monitor the market 24 hours a day. Computers can monitor the market 24 hours a day and automatically enter and exit at the right time. Without human intervention, you can sleep peacefully at night and do other work during the day. Advantage 5: Guarantee the profit in advance. It can be said that the most important advantage of EA intelligent foreign exchange automatic trading system is that it can ensure profitability. Making money is the last word. Although the intelligent automatic foreign exchange trading system can't guarantee victory, it combines the wisdom and experience of many foreign exchange experts, plus strict stop loss, risk control and position control, so there is no excessive trading, no emotional trading, and no greed and fear that can't be avoided by manual trading. Whether it is profitable or not and how much it is depends entirely on the design idea and writing level of the automatic trading system. EA's historical stylized trading, namely intelligent trading, originated from 1975 American stock portfolio transfer and trading. With the development of technology and the application of computer system, investment managers and brokers can realize one-time trading of stock portfolio. In 1980s, stylized trading developed rapidly, and the trading volume increased sharply, because the similarity of software use and the introduction of stop-loss function aggravated the directional effect of the market. In the 1990s, there appeared a brokerage company with stylized trading as a means of competition, and its portfolio was diversified. Stylized trading is the main trading mode in the 2nd/Kloc-0th century, which has been paid attention by the capital market supervision authorities in various countries, and it is regulated and guided by laws and regulations, and invested and developed in technology. According to the statistics of American Aite Group LLC Consulting Company, in 2006, there were13 transactions in European and American stock markets through automatic trading systems or algorithms. It is estimated that by 20 15, this proportion will reach 85%. In 2006, more than 40% of trading orders in London Stock Exchange came from algorithmic traders, and in 2007 it reached 60%. Generally speaking, the usage rate of algorithmic trading in American market and stock market is higher than that in other markets. It is estimated that by 20 15, the usage rate of algorithmic trading in some markets will reach 85%. Algorithm trading is also very active in the foreign exchange market, accounting for about 25% of the total trading volume in 2006. Algorithm trading can also be easily applied to futures and options markets. It is estimated that by 20 15, about 45% of options trading volume will come from computer programs. The bond market will gradually introduce more algorithmic traders. At present, there are many EA in China, but there are still many shortcomings in technology and practicality. Many EAs are written by themselves, with low technical content and semi-manual, and can only be installed in a computer for operation.