Confines of childbearing culture is objectively in existence.In terms of the custom of unilateral lopsidedness in matrimony and family, this article probes into the origin of confines of child-bearing culture, and finds out that unilateral lopsidedness in family name inherit, social succession, kindred and dwelling patterns are the important causes in formation of confines of child-bearing culture.Breaking through the confines and realizing the modern childbearing culture, it needs to change the old custom of unilateral lopsidedness in matrimony and family. This change would be difficult because of its solidity and reasonableness.
