The accounting income maintains the financial capital preservation, namely, the monetary value that only requires the owner to invest is not eroded, the enterprise income exceeds the input value part is the accounting income. Accounting focuses on reporting financial results. The economic benefits insist on physical capital preservation, which can only be confirmed when the actual production capacity of the owner is saved. It is believed that only by maintaining the actual production capacity of the enterprise can the enterprise reproduce smoothly. Physical capital preservation is more meaningful than the income of financial capital preservation, but it is difficult to measure. In addition to the formal "perfect" in the new classical market concept, the new classical theory has not added new meaning to the classical theory. That is to say, under the new classical "perfect" mathematical model under the skin, it is still classical free laissez-faire order, "new" is "new" in the form. And the form of depth at the expense of perfect at the expense of the thoughts, general equilibrium model of fine arbitrarily abstract away the activities of the "personal pursuit to satisfy desires to promote social welfare" logic support. The standard variable interest rate (SVR) is usually adjusted at the base rate, and these standard variable interest rates (SVR) are not fixed or floating transactions. The investment quantity is the decreasing function of interest rate, saving is the increment function of interest rate, and the change of interest rate depends on the equilibrium point of investment quantity and saving amount. Keynes's theory of money supply and demand decided that interest rates were a monetary factor rather than an actual factor. Jeffrey Currie of Goldman sachs analyst and Michael Hinds, wrote in the latest report, the next three months, six months and 12 months of gold prices were at $1225 an ounce and $1200 an ounce and $1225 an ounce.