Sima You

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Sima You
Traditional Chinese 司馬攸
Simplified Chinese 司马攸

Sima You (248–283), courtesy name Taiyou (大猷), was the second son of the Cao Wei regent Sima Zhao during the Three Kingdoms period. Sima You became the heir to his uncle, Sima Shi, who at the time was childless. It is known that Sima You was a person of mild-mannered character who expected to be appointed emperor, but ended being passed over due to that of his young age. The heir that was chosen was Sima Zhao's oldest son Sima Yan, who established the Jin Dynasty not too long later after his succession.

When Sima Yan appointed his developmentally disabled son heir apparent, he was concerned that the court viewed Sima You too favourably. In order to strengthen his son's position, he ordered Sima You away from Luoyang in 282 to a vassal state, despite protestations from their sisters, Princess Jingzhao and Princess Changshan.[1] Sima You fell ill from the stress and died soon after at age 36.[2]

Sima You's son, Sima Jiong, was one of the eight princes involved in the War of the Eight Princes during the Jin Dynasty.


See also[edit]


  1. ^ Fang Xuanling, ed. (648). "列傳第十二" [Historical Biography 12]. 晉書 [Book of Jin] (in Chinese). Retrieved 13 March 2017. 
  2. ^ Fang Xuanling, ed. (648). "帝纪第三" [Chronicles of the Emperor]. 晉書 [Book of Jin] (in Chinese). Retrieved 13 March 2017. 
Prince of Qi
Born: 248 Died: 283
Chinese royalty
Preceded by
Cao Fang
Prince of Qi
Succeeded by
Sima Jiong