Abstract: Sanqiao is a unique ethnic group inhabited in the border areas of Liping county and Jinpingcounty of Guizhou province,a marginalized ethnic group in terms of geographical region,culture,and economy.Before the 1980s,marriage of the Sanqiao people were mainly within the ethnic group,therefore their marriage ecology was balanced.However,when they are exposed to a globalized and market society,their marriage ecology is greatly imbalanced,showing a new and unfair phenomenon in the era of globalization and marketization.

Key words: marginalized ethnic group, culture group, Sanqiao people, marriage ecology