The rural society is the foundation of the country, whose prosperity will bring about the prosperity of the whole country. The replacement of strength and weakness between the traditional rural governance and the modern "contract" governance reflects the changes in the rural social governance. The traditional "strong countryside with week binding of contract" and the difference sequence pattern and social succession constitute the operation mechanism of the traditional governance pattern. Social reforms reshape the structure of rural society. The establishment of the rule of law and the collapse of the human bond have caused the shift to a "strong contract binding with week human bond". The modernization of rural social governance is an important goal of Chinese modernization. Returning to the local nature of rural society, building a rural social governance community, and realizing the new pattern of "strong countryside with strong binding of contract", which means the co-governance of both law and human bond, are in line with the essential requirements of Chinese modernization. It is of great significance to give full play to the profound basic strength and majestic innovative power of rural social modernization to promote Chinese modernization.