Agroforestry is the incorporation of trees into farming systems. It has enormous potential to mitigate the effects of climate change, drought, prevent desertification etc. Now-a-days agroforestry is measured as a major asset for improving farmer’s income. Management of trees in conjunction with crops in rainfed areas minimize the risk associated with stress period through diversified components and through efficient utilization of limited natural resources. The present study was undertaken to recognize the contribution of agroforestry on income of farmers in Musiri Taluk, Tiruchirappalli district. A total of 75 lead farmers were selected for the study. Data was collected by using a standard structured questionnaire administered through face-to-face interviews. Melia dubia and Ailanthus iveli are the tree species planted by the farmers. Majority of the respondent point out that low rainfall, less ground water and soil suitability are the main reason for adoption of agroforestry system. Besides effective utilization of farm output for income generation from agroforestry followed by entrepreneurship development also influenced the adoption level. The major impact of agroforestry adoption on the improvement of livelihoods of farmers identified were increased farm income, reduced input cost and helps in entrepreneurship development. Therefore, it was concluded from the study, agroforestry is a multi-dimensional farming approach, which is very effective in solving several problems of achieving farmers’ livelihood security under changing climate.