In order to test the effect of nitrogen and phosphorus fertilizers on qualitative and quantitative characteristic of beebalm, an experimental was carried out using factorial with randomized complete block design with three replication in llam, Iran in 2009–2010 growing season. Experimental factor including different of nitrogen fertilizer (70, 100 and 130kg/ha) and phosphorus fertilizer (50, 70 and 90kg/ha). Results showed that nitrogen fertilizer was affected on essential oil content, essential oil yield, plant height, number of tillering, stem diameter, root length, root weight and shoot ratio. The highest essential oil yield, plant height, number of tillering, stem diameter, root length was obtained 130kg/ha nitrogen application. Phosphorus fertilizer affected essential oil content, essential oil yield, plant height and root weight. The highest essential oil yield, plant height, number of tillering, stem diameter, essential oil yield and root weight was obtained 70kg/ha phosphorus application. Interaction effect nitrogen×phosphorus application was affect on essential oil yield and plant height. The highest and the lowest essential oil yields were obtained 130 nitrogen and 70kg/ha phosphorus application, respectively.