Objectives : This study was designed to investigate the scavenging effect on Nitric Oxide of BUM. Methods : The scavenging effect on NO concentrations 2, 6, 12 and 24 hours after treatment with Vit C. and BUM at 1, 10, $100{mu}g/ml$ were estimated. And those was compared with control group. Results : 1. The concentration of NO 2 hours after treatment with BUM at 1, 10, 1$100{mu}g/ml$ were decreased compared with control group. 2. The conecntration of NO 6 hours after treatment with BUM at 1, 10, 1$100{mu}g/ml$ were decreased compared with control group. 3. The concentration of NO 12 hours after treatment with BUM at 1, 10, $100{mu}g/ml$ were decreased compared with control group. 4. The concentration of NO 24 hours after treatment with BUM at 1, $100{mu}g/ml$ were decreased compared with control group. Conclusion : The scavenging effect of BUM on NO was dose-dependent.