The study is intended to study the effect of nitrogen fertilizer on the growth of chilli. By studying the duty of nitrogen the chili. The nitrogen is a nutrient with a focus on growth of pepper is very much. If the chili that get nitrogen at least not enough demand. Or if it gets too much need of chili. May result give chili is incomplete or abnormal growth. From the study of the effect of nitrogen fertilizer Found that nitrogen is affecting the growth of pepper in the height of the trunk and the width of the canopy. Because the nitrogen will stimulate growth, especially the growth of the stem.