Abstract: It was introduced in this paper that the social work concepts， approach and methods was applicated in a migrants' project to improve their access to reproductive health. Social work was a practical way to improve the targeting and effectiveness of project activities. By providing social work services on reproductive health， job-seeking， adapting to city living and family relationship，legal consulting and adolescent education， the project of reproductive health greatly promoted their healthy behavior and utilization of basic public health service at migrant community， as well as their capacity to deal with family issues and social conflicts.

Key words: Population, Residential mobility, Social work, Reproductive health services, Health care rationing