The main ways for Bitcoin companies to make profits are: 1, developing mining business, such as Dianniu Finance; 2. Selling mining machines, such as Bitland. Of course, there are also companies that take into account the above two operating modes. It should be pointed out that bitcoin has no legal status in China at present, so investment should be cautious. During the financial crisis in 2008, Bitcoin came out. After 10 years of development, the price of bitcoin has experienced a sharp rise and fall. A number of bitcoin companies came into being. It is found that there are many companies around Bitcoin in the market, such as Bitland, Dianniu Finance and OKCOIN. With the soaring price of bitcoin, the myth of getting rich keeps appearing. However, there are also many tragedies in which people are burdened with millions or even billions of debts overnight, and people finally choose to end their lives.