What distinguishes the Chinese Communist Party (CCP) from other parties is its emphasis on the construction of the party’s grassroots organizations.Since its establishment,the CCP has been expanding its coverage of grassroots organizations to strengthen the power in rural areas.The extension to the bottom in the vertical direction gradually extends party organizations from the township and village level to the most basic level of natural villages，strengthening the bond between the party and the people; the “extension to the margin” in the horizontal direction covers the new rural social subjects and strengthens the governance in rural areas.Based on the construction of grassroots organizations in vertical and horizontal dimensions,the CCP has consolidated its authority and improved its governance in rural areas.Surrounding the key points of the Party and the state,The Party’s adaptation to the development and change of rural social structure and its expanded organizational coverage have become the valuable experience of the CCP in the construction of grassroots organizations in the centennial history.