Abstract: Taking Guizhou province as an example, this research selects the 1995,2005, 2015 1% National Population Sample Survey Data, and 2010 The Sixth National Census Data to describe the status quo of marriage difficulties of older unmarried men or bachelors in China. This research constructs a new analysis framework “ regional squeeze” to discuss the causes to marriage difficulties of older unmarried men or bachelors. The analysis indicators include: direct female marriage migration;