An up to 54,963 billion dollars loss may be given now if a financial crisis occurs. The central bank thinks about a case to solve a financial crisis by operation. In that case, the world central bank may lengthen a monetary bass by only up to 54,963 billion dollars. At the same time, the buying operation of the world central bank may be up to 54,963 billion dollars. If the fund of the financial institution is short by a financial crisis, the world central bank may make up a deficiency for public funds. The government may publish the deficit of the fund of the financial institution and a bond of the same amount. And the world central bank may purchase such amount of bond issuance and same amount by a buying operation through a market. The world economy will have to give once, the loss of the financial crisis up to 54,963 billion dollars. And the world central bank and government may solve the loss of the financial crisis by operation.