1, Russia caused collective sanctions by western countries led by the United States, which led to a large amount of capital outflows. These dollar-denominated international capitals fled in large numbers, which led to the decrease of the dollar in the market, the devaluation of the ruble and the destruction of dumplings.

2. The international oil price plummeted by nearly 50%. The market was bearish on the Russian economy, whose main source of income was oil export, and voluntarily withdrew from the Russian market, resulting in further capital outflow.

3. Russian domestic economy has been stagnant for a long time. This year, the economic growth rate is estimated to be below 1%, and the inflation rate may exceed 10%. For investors, doing business in an economy that has not grown for a long time is a test. Many investors who can't stand the cold winter of Russian economy will naturally choose to leave.

The recent appreciation of the US dollar is also a reason for the relative depreciation of the ruble exchange rate. Funds will choose to chase the dollar and give up the ruble, further aggravating the relative surplus of ruble supply.

The most fundamental reason is that there are serious problems in Russian economy.