A healthy parent-child relationship can be defined as the relationship where parents provide for their child's physical, emotional, and developmental needs. Egalitarian parenting is taken to be the representative of American image and the west and is after by other countries in the world. As comparison with the West, China, the representative of the eastern in the world is always criticized for the authoritarian parent-child relationship. This paper analyzes the development and performance of egalitarianism in children-rearing in America after WWI and China after WWII from four periods: authoritarian generation VS founding generation; depression generation VS turbulent construction generation; baby-boom generation VS Reform and opening up generation; info-child generation(1965-)vs (1994-), and investigates the reasons from the aspects of ideology and socialization.