Foreign exchange is legal in China, and foreign exchange margin trading (also known as foreign exchange speculation) was first born in London in 1980s. It means that investors use the trust provided by banks or brokers to conduct foreign exchange transactions. It makes full use of the principle of leveraged investment, and it is a long-term foreign exchange transaction between financial institutions and between financial institutions and investors. Is it legal to speculate in foreign exchange in China? This is also a problem that has plagued everyone for a long time. It is often heard that foreign exchange speculation is "in a legal blank" or a gray area. In fact, from a legal point of view, foreign exchange margin trading (foreign exchange speculation) has long been established as a legal activity.