Abstract
In recent years , there is more attention to migration from developed areas to un developed areas, so it highlighted the return migration. It can be said , it is a circumstance that individual or individuals selected their own country for residence from where  based on different reasons migrate to their own country or first areas. Aim of this study is recognition motivations of return migration and rates of economic and social changes and development of rural areas. The methodology of this study is based on functional aim and description –analysis nature and its framework based on survey. The requested data gathered from 260 returns migrates of rural of   Ahar at year 96 with using multi-stage cluster sampling method and for investigating gathering data is used document and library and questionaries’ technic. Spss and Anova, correlation test, regression and mean deviation are used for analysis of data. The obtained results of multi and two variables regression are shown that economic motivation of return migrant is most effective variable in rate of changes and developed of rural. Also, having land at rural effects on motivation of return migration, social cooperation and changes and developed of rural area. Using mechanizes and technology methods of agriculture effect on motivation s of migrants and social cooperation and developing rural. With regard to obtained results of multi – regression, economic motivation (36%) has more rate of economic-social development, and at total (52%) rate of rural development is determined by economic motivation of migrants, social cooperation, social motivation of migrants and using modern technology of agriculture.