At present, China is the world's largest source of artificial intelligence technology, and the number of artificial intelligence patent applications in China accounts for 66.54% of the global total, followed by the United States, accounting for 20.49% of the global total. Although South Korea and Japan rank third and fourth, they are far behind China, which ranks first. According to the country where the patent priority belongs, if there is no priority, it shall be calculated according to the country where the acceptance bureau belongs. If there are more than one priority country, it shall be calculated according to the earliest priority country.