The present investigation was designed to determine the mass media exposure and information source of farm women in participation with groundnut production and post – harvest operations. The study was undertaken in selected six villages from Keelpennathur block of Thiruvannamalai District in Tamil Nadu. A sample size of 120 was fixed for the study considering the limitations of time and other resources. Based on the proportionate random sampling method, one hundred and twenty respondents were identified for the study from selected six villages. Data collection was done with the help of well-structured interview schedule. The data were collected by the researcher by personally interviewing the respondents and the collected data were interpreted and tabulated for appropriate statistical analysis. The results of the study showed that majority of them were agriculture as primary mass media exposure and low level of information source of farm women in groundnut production and post – harvest operations.