With the strengthening of globalization, the imbalance of international economy will lead to the redistribution of international capital on a global scale. In a sense, the international economic imbalance and the defects of the international monetary system are the preconditions for the outbreak of the financial crisis, while the attack of international hot money is the realization condition for the outbreak of the financial crisis. Judging from the current international situation and China's domestic situation, the preconditions for the outbreak of financial crisis have been met, so preventing international hot money attacks is the primary goal of formulating China's current macroeconomic policy. Keywords: financial crisis; International economy; International monetary system; Whether the international hot money financial crisis is caused by external or internal factors, there have always been two opposing views in academic circles: conspiracy theory and legal theory. Conspiracy theory holds that the financial crisis is caused by premeditated and planned attacks on the economy and is caused by external factors, especially after the financial crisis in Southeast Asia. Legal theory holds that the financial crisis is the law of the economy itself and is caused by internal factors. The third generation financial crisis theory ① is basically a theory of recognizing the law. With the improvement of financial supervision technology, 1 the possibility of financial crisis caused by supervision or problems in supervision becomes smaller; With the increasing trend of economic globalization, the modern financial crisis basically shows that under the condition of international economic imbalance, international capital is driven by interests and the distorted national monetary system leads to the outbreak of regional financial crisis, so in essence, the nature and causes of financial crisis have changed. Based on the existing research, this paper analyzes the causes of the financial crisis from the perspective of international economy. Throughout the history of financial crisis, financial crisis is always accompanied by regional or global economic imbalances. 1929 before the financial crisis broke out, the international economic structure changed greatly, and Britain's dominance in the world gradually tilted towards the United States and Europe. In particular, the rapid economic growth of the United States shows a trend of replacing Britain's hegemonic position. This international economic imbalance laid the groundwork for the subsequent financial crisis. At the end of the 20th century, the trend of regional economy 1 was faster than that of economic globalization, and the economic connection between Latin American countries and the United States made the "butterfly effect" of Latin American countries on the American economy stronger than that of other countries. In the 20 years at the end of the 20th century, the economic structure in Latin America was unbalanced, which often manifested as the financial crisis in Latin American countries. The imbalance of economic structure in Europe, America and Japan is also the root cause of the financial crisis in Europe, America and Japan. When the regional or global stable economic structure is broken, the new economic balance is often driven by the financial crisis. The European financial crisis of 1992 originated from the rapid economic development of Germany after the reunification with 1, which broke the economic balance between Germany and the United States and between Germany and other European countries. 1990 Japan also achieved a new economic balance because of the financial crisis after the economic balance between the United States and Japan was broken. Regional or global economic imbalance will lead to the redistribution of international capital within the range of 1 Under the background of regional economic 1 integration and economic globalization, the impact of 1 national macro-policies may be regional or global. In the short term, the international economy is relatively balanced at a certain point, and the total global capital and demand are fixed at 1. When the economy of 1 changes, the international capital and international demand of different countries will change accordingly. If it is a small economy, its influence is only regional; if it is a big country, its influence is global. When the economy of 1 big country becomes stronger, it will attract international capital to this country and cause capital outflow from other 1 countries. When the capital outflow reaches a certain level of 1, there will be a shortage of liquidity, and the financial crisis will change from possible to inevitable. The signal of this change is the high interest rate policy of big countries or the strong monetary policy of big countries. For small economies, when the economy becomes stronger, it will attract the inflow of international capital. When the inflow of international capital is large, after the country's real economy absorbs international capital saturation, international capital will merge with the country's virtual economy, thus promoting the economic bubble. When the virtual economy is seriously deviated from the real economy, international capital will quickly retreat, which will lead to the transition from excess liquidity to tight liquidity in small countries and lead to the outbreak of financial crisis. From the formation path of the financial crisis caused by international economic imbalance, we can see that the international economic imbalance is manifested through the balance of payments, and the adjustment of the balance of payments is carried out through the international monetary system. If we have a perfect and effective international monetary system, we can completely avoid the mandatory and destructive adjustment of the international economy, that is, we can avoid the financial crisis. The actual international monetary system is manipulated by big countries, so the international economic imbalance will be distorted and amplified in the step of 1