Improving the well-being of farmers is a prerequisite for the development of organic farming. Although some studies have discussed the relationship between farmers engaging in organic farming and their well-being in specific situations, the overall outline of their relationship is not clear. Based on the well-being framework proposed by Narayan et al., this article reviews the relevant literature on the impact of engaging in organic farming and public sector measures supporting it on the well-being of organic farmers, to clarify the existing acknowledge of the relationship between engaging in organic farming and farmers' well-being. This research indicates that engaging in organic farming has an impact on farmers' income, health, social relations, security, freedom and choice. Income is the primary component of farmers' well-being, whereas whether engaging in organic farming increases or decreases their income needs to be examined by the comprehensive effects of yield, cost, and price. Thereby, there is no consistent conclusion. The impact of engaging in organic farming on farmers' social relations is bi-directional, but its impact on their health, safety and choice is positive. The public sector supports organic agriculture through financial payment, supporting cooperation, establishment and improvement of organic certification systems and green procurement, which helps to improve organic farmers' well-being. Among them, financial payment is the most critical support measure. Finally, the comprehensive evaluation of farmers engaging in organic farming in different situations on their well-being, the inspection of the causal relationship between farmers' organic farming behaviors and their well-being, and the test of the contribution of public sector organic farming policies to the well-being of organic farmers are critical topics for future research.