Although cross-market arbitrage is a relatively stable way of maintaining and investing, there are still some risk factors. There are mainly the following types: (1) price stability, such as changes in tax rates and exchange rates, may lead to a lack of regression after the price deviates from the mean. (2) Market risk. (3) Credit risk mainly refers to the credit risk of various exchanges and other institutions. (4) Time exposure risk. Due to the time difference between internal and external market transactions, it is difficult to place orders at the same time, so there is exposure risk. (5) Policy risk mainly refers to the risks brought by the adjustment of national import and export policies and the changes of tariffs and other tax policies.