Enterprise Risk Management (ERM) deals with the broader risk management of an enterprise and then extracting every possible means by which an organization able to with stand those risks. The study aims at assessing the factor that determines enterprise risk management. The target population of this study were those actors in Tomato production value chains in East Showa zone, Ethiopia. It was cross-sectional survey design that was deployed to undergo the study. Also, stratified random sampling was deployed in selecting target respondents. Therefore, based on two hundred seventy three (273) respondents responded the questionnaire. Accordingly, the study found that maintaining a sound enterprise risk management is a function of setting a sound strategic planning, exercising participatory leadership and management style and rendering effective marketing services to firms' output.