Abstract: The construction projects carried out in China since 1949 have caused the involuntary resettlement of over 50 million people. Given that the resettlement was involuntary in nature, social integration has become the key issue in social restructuring and development for the people involved. Social integration of involuntary resettlers means integration of interests, including those with reference to the macrostructure, the adjustment of land use, access to infrastructure, and so on. Next is social integration of society and culture, including its effects on village and administrative organization, clans, religious beliefs, and ethnic traditions. Currently, promotion of relocation legislation and mass participation is enhancing the social integration of involuntary resettlers.