The Christmas shopping in the United States usually starts after Thanksgiving. Thanksgiving is the fourth Thursday of every November. Therefore, the next day, the fourth Friday in November, is also the first day of big shopping for Americans. On this day, shopping malls in the United States will launch a large number of discounts and promotions to carry out the last large-scale promotion at the end of the year. Because shopping malls in the United States generally record deficits with a red pen and record profits with a black pen. People's crazy buying on the Friday after Thanksgiving greatly increases the profits of shopping malls, so it is called Black Friday by merchants. Merchants hope to get the most profit for the year by starting their Christmas shopping on this day.

There are many theories about the origin of "Black Friday", one of which refers to the long lines of people going to the mall to shop in the dark on the Friday after Thanksgiving. A more common view is that because this day is the first day of business after Thanksgiving (the fourth Thursday in November), followed by the traditional and grand Christmas in the United States, people usually start their Christmas shopping from this day. Many stores will have a large number of customers and make a lot of money. Traditionally, different colors of ink are used to keep accounts, with red indicating losses or deficits and black indicating profits. Therefore, this Friday is called Black Friday to express the expectation that profits will be made on this day. Because store discounts usually start at midnight after Thanksgiving (i.e. midnight on Friday) and start the day after Thanksgiving, people who want to buy bargains have to rush to the mall in the dark and queue up to buy bargains. This is okay. Considered an origin of "Black Friday". There is a very vivid term for this behavior, called Early Bird. November and December each year are the traditional shopping peak seasons in the United States, and "Black Friday" is the craziest shopping day for Americans in the year.

The store employees used the name Black Friday to laugh at themselves, saying that the day would be extremely busy