Cao Cao, whose courtesy name is Mengde, also known as A'mao, was born in Qiao County, Peiguo (now Bozhou, Anhui). His father, Cao Song, was the adopted son of the eunuch Cao Teng, who rose to the rank of Taiwei. At the age of 20, Cao Cao was promoted to be a filial and honest man and was appointed as the Northern Wei of Luoyang. He was famous for his strict law enforcement. In 184, he suppressed the Yingchuan Yellow Turbans as the Cavalry Commander and moved to Jinan to be the Prime Minister. After Dong Zhuo took power, he dispersed his family wealth in Chenliu and recruited troops. In 190, he joined the Kwantung Allied Forces to attack Dong Zhuo. In 192, he incorporated the Qingzhou Yellow Turbans and surrendered to Yanzhou.
In 196, he welcomed Emperor Xian of the Han Dynasty and moved his capital to Xu County. From then on, he gave orders to all directions in the name of the imperial court. In the same year, he promoted farming under Xu. After that, he captured Lu Bu in the east, defeated Yuan Shao in Guandu in 200, and conquered Wuhuan in the north in 207 to unify the north. In 208, he became prime minister, went south to Jingzhou, and was defeated by the coalition forces of Sun Quan and Liu Bei in Chibi. After that, he defeated Ma Chao and Han Sui in the west, and surrendered Zhang Lu, but Hanzhong was finally captured by Liu Bei, and the world was divided into three parts.
In 213, Cao Cao was granted the title of Duke of Wei, and the Wei State was established with ten counties in Jizhou, with its capital at Yecheng. In 216, he was promoted to the title of King of Wei, and the Wei State had already established a imperial court. He made three orders to seek talents, advocating "only those who are qualified", and together with Cao Pi and Cao Zhi, their father and son, presided over the Ye literary circle and created a generation of Jian'an literary style. In the first month of 220, he died of illness in Luoyang and was buried in Gaoling in the western suburbs of Yecheng. He never proclaimed himself emperor in his life. In the same year, Cao Pi succeeded the Han Dynasty and honored him as Emperor Wu.
Cao Cao cleaned up the mess in the north during the chaos at the end of the Han Dynasty, restored production through farming, and recruited talents with the "approach based on talent". He was good at politics, military and literature. Chen Shou called him "an extraordinary person and a transcendent hero." However, when he conquered Xuzhou, he killed the people indiscriminately, killed Kong Rong, forced Xun Yu to death, hijacked the Han emperor, and paved the way for the Han Dynasty. Later generations received mixed praise and criticism. The folk image of the "white-faced traitor" largely comes from the orthodox views of Liu and Cao and the rendering of "The Romance of Three Kingdoms".