Key Facts
- Duration
- 220–265 AD
- Founded by
- Cao Pi, son of Cao Cao
- Initial capital
- Xuchang, later moved to Luoyang
- Successor state
- Jin dynasty (founded 266 AD)
- Period
- Three Kingdoms period
Imperial Zenith Metrics
Historical Trajectory
Phase I: Rise
Cao Wei's foundations were laid by Cao Cao, a warlord who dominated the Eastern Han court and progressively unified northern China through military campaigns. In 213 AD the Han government named him Duke of Wei, and in 220 AD his son Cao Pi formally deposed the last Han emperor and proclaimed himself emperor, establishing Cao Wei as an independent dynastic state with its capital initially at Xuchang before relocating to Luoyang.
Phase II: Zenith
At its height Cao Wei controlled the populous and agriculturally productive North China Plain, the Yellow River basin, and substantial territories across the northwest, giving it a decisive demographic and economic advantage over its rivals Shu Han and Eastern Wu. The Wei state maintained relatively stable administration inherited from Cao Cao's organizational reforms, supported agricultural recovery through military-colony farming systems, and dominated interstate diplomacy.
Phase III: Decline
After regent Cao Shuang was deposed and executed in 249 AD, real power shifted to Sima Yi and then his sons and grandson, reducing successive Wei emperors to figureheads. The Cao imperial family was progressively marginalized. In 265 AD Sima Yan forced the last Wei ruler, Emperor Yuan, to abdicate, proclaiming the Jin dynasty in 266 AD and formally ending Cao Wei.
Notable Imperial Reigns
Selected rulers mapping the empire’s trajectory