Purpose: This study is to investigate the difference in management costs between smart farms and outdoor mandarin through Monte Carlo simulations. Agriculture is threatened with sustaina0bility due to a decrease in the labor force. In particular, the aging of agriculture in Korea is at a serious level compared to other countries. Smart farms are being distributed to solve the aging problem of agriculture. In particular, IoT, blockchain, machine learning, artificial intelligence, augmented reality, and big data are becoming more common, and such digital agriculture enables sustainable agriculture. such digital agriculture enables sustainable agriculture. So, these technologies often involve uncertainty between technology and technology users. This uncertainty is to be resolved through simulation. Data and methodology: Monte Carlo simulation was performed through Oracle Ball. The outdoor mandarin and the mandarin of the smart farm were set to compare. And the collected data were tornado analysis, spider chart, sensitivity analysis, predictor analysis, and prediction comparison analysis using Oracle balls. Results: As a result of the analysis, In Tornado, pesticide costs, fertilizer costs, and site development cost have a great influence on intermediate goods. however, in sensitivity analysis, pesticide costs, redemption cost for farming facilities, and fertilizer costs have a great influence on intermediate goods. Through the overall analysis, it was analyzed that pesticide and fertilizer costs commonly affect intermediate goods, and pesticide costs affect intermediate goods the most. In the predictive simulation analysis, it was analyzed that there was no significant difference between smart farms and outdoor mandarin of intermediate goods. Conclusion: There is no significant difference between smart farms and outdoor mandarin in terms of management costs. So, Considering the initial facility investment cost of smart farms, it will be difficult to obtain profitability in a short period of time. Pesticide costs have a significant impact on intermediate goods between outdoor mandarin and smart farms, because it was analyzed that there is no significant difference in pesticide costs between outdoor mandarin and smart farm. Currently, smart farms are mainly focused on reducing production costs and reducing labor. But in the future, smart farms need to develop technologies that reduce pesticide costs