The market can indeed be described as a laissez-faire pricing mechanism. However, this price mechanism does not operate in a vacuum, and does not work effectively in any social system. The basic premise of the efficient operation of the price mechanism is the implicit assumption of Smith: to recognize individual "lusts" and to clear and protect individual property rights. Clear and guaranteed personal property is the basic premise of market existence. It is necessary to recognize the personal "lusts" and to ensure that individual property rights are supported by the corresponding institutions, which are not in our society. Interest determines the regularity of prescriptive (interest this qualitative rules will determine the amount of the rules), the amount of interest depends on profit, interest rate depends on the average profit margin. Marx further pointed out that, between average profit margin and zero, interest rate depends on two factors: one is profit margin; The second is the proportion of total profits allocated between lenders and borrowers. Securities companies that need to invest in securities should apply for the corresponding investment financial accounts. Account can be used in financial investment in stocks (including A shares, B shares and H shares, etc.), bonds (including Treasury bonds, corporate bonds, corporate bonds, etc.), futures (including financial futures, such as stock index futures, foreign exchange futures, commodities such as metal futures, futures of agricultural products, etc.) and so on A series of financial instruments to invest in securities. The opening of the securities account can be handled by the business department of the securities companies and it needs to be handled within the trading day. Some securities companies such as guotai junan securities through the provinces website (e.g., guotai junan guangdong) online booking, through the appointment of account opening time is more flexible and corresponding work time, lunch time, daily can open an account on Saturday. According to this model, the interest rate decision depends on the supply of savings and investment needs, money supply, money demand, four factors, cause a change in the saving investment, money supply and demand factors will affect the level of interest rates. This theory is characterized by general equilibrium analysis. Julie Palmer, a retail expert at Begbies Traynor, said retailers faced a particularly disappointing deal in the weeks following the apparent success of "black Friday" at the end of November. The U.S. crude oil inventory unexpectedly fell 5.2 million barrels last week, pushing U.S. oil further higher, noted the zero hedge fund. U.S. crude stocks have declined for five consecutive weeks, while gasoline inventories have increased for five consecutive weeks. If there is a clear indication of an increase in the EIA Cushing crude inventory released on Wednesday (December 20), crude stocks could end the five consecutive decline. Another element of the market-tracking plan is determining the number of foreign exchange futures markets to track and the number of transactions to be traded within a certain period of time. Market is the inevitable product of the division of labor and the development of commodity economy. At the same time, the market also promotes the social division of labor and the further development of commodity economy during its development and expansion. The market through information feedback directly affects the production of people, how much production, and the market time, product sales status, etc.; Middle link commodity economy development process, supply and sale, the parties to provide production, supply and sale parties exchange places and other exchange, exchange time, to realize the commodity producers, operators and consumers their own economic interests.