Chinese idiom · 成语
门当户对
Meaning
Matching gates and doors; equal social status.
Character by character
Origin and story
Social expressionA related idea appears in the Records of the Three Kingdoms' biography of Empress Guo. She instructs her relatives to marry into suitably matched local households and not use their influence to force marriages elsewhere. The wording is 門戶匹敵, not the exact later idiom.
The full expression is attested in Song writing and Yuan drama, including The Western Chamber. Doors and gates stand for households: the comparison concerns the families' status and resources, not the matching dimensions of architectural fittings. It reflects a historical criterion for marriage compatibility. Using the phrase today may describe that expectation without endorsing it as the only basis for a relationship.
Sources and further reading
In everyday life
父母觉得他们门当户对，但她更在意两个人能不能互相理解。
Their parents think the families are well matched, but she cares more about whether the two people understand each other.
Usually compares family background for marriage, not personal compatibility in every respect.