Abstract: This study is based on the field survey, one methodological tool among others used mainly in the social sciences. The aim is to determine the impact of international migration on the spatial dynamics of the city of Guercif. A phase of reconnaissance of the field, followed by a qualitative stage marked by interviews with the respondents, allowed us to verify the results and exploit them quantitatively via questionnaire. The analysis of the responses from 230 valid questionnaires indicate a strong involvement of migrants from the city of Guercif in speculation and the animation of the land market, thanks to the funds transferred.