In this study, measurements were conducted on one ranch to investigate the actual status and characteristics of odor substances generated from livestock manure. In addition, the concentration of odor substances emitted from the ranch was implemented as a heatmap by hour, day, and month to evaluate the odor generation characteristics at a specific time. Among the 22 odor-Causing substances, the concentration of Trimethylamine, Toluene, Xylene, and Ammonia was particularly high at the ranchin this study. As a result of the hourly heat-map, there was no result of discharging odorous substances over a specific time, but in the daily heat-map results, Trimethylamine, Xylene, and Ammonia were discharged at high concentrations in the middle of the month (10-17) and horses (24-30). As a result of the monthly heat-map, the concentration of the rest of the substances except Toluene was significantly higher in 2023 than in 2022, especially all substances in February and April, which is believed to be affected by temperature. Therefore, additional seasonal analysis is needed, and since the target ranch in this study has a large number of cow, future studies will need to investigate farms with a large number of pigs or chickens.