Dou surname is a surname of Han nationality in China. Now it is mainly distributed in Henan and Hebei. It ranks 249th in the current surname list, with a population of about 467,000, accounting for 0.032% of the total population of China. Dou (Du) is not among the hundreds of surnames in Taiwan Province Province.

There are five theories about the origin of Dou surname. One is from the Han nationality. After Shao Kang, the Xia emperor, he took the place name as his surname. From the name of Bao, there is a folk saying that Dou (traditional "Dou") Bao (traditional "_") is a family; When it was said that there was Gong Dou in Wei during the Warring States Period, his descendants simply changed to Dou Shi; One said that from Zhou Muwang, the Queen's family was given the name of Dou Shi; There is also a saying that ethnic minorities have given Dou Jia the right to change.

Originated from the Han surname, it is said that in Shun Di, Xiu Ji, the wife of Gun, was her daughter. She became pregnant after swallowing Coix lachryma-jobi and gave birth to Yu. So, after Yu succeeded in harnessing water, Shun gave Yu his surname (Yu is a homonym of Yi).

Originated from the Di nationality, Lian Bu, Di Ku, which originated from the Di nationality in the Southern and Northern Dynasties, belongs to the Chinese name Juyi. The history book "Wei Zhi" contains the records of Di Ku and Lian Bu, which is actually a relatively powerful Di tribe. At the end of the Jin Dynasty, the leader of Kudiyi Company took "Wudou City" (now the ancient town of Tuoketuo, Hohhot, Inner Mongolia) as Dou Youni, and the ethnic groups were mainly distributed in Shaanxi, Gansu and Sichuan. Dou Youni later led his troops to compete with the Northern Wei regime and eventually failed. The whole tribe was annexed and controlled by the Northern Wei Dynasty and gradually merged into Xianbei people.

Originated from the Xianbei people, from the Xianbei people in the Northern and Southern Dynasties, it belongs to the sinicization and surname change. According to historical records such as Tongzhi Genealogy:

The stairs department of Xianbei nationality was named after the leader, and later became the family of stairs.

Originated from Mongols, it came from Uzala Department of Mongolia in Yuan and Ming Dynasties, and it belongs to Juyi in Chinese.

Originated from Manchu, from Jurchen Guaercha Department in Yuan and Ming Dynasties, it belongs to Juyi's Chinese name.