Corn is one of the most cultivated cereals in the world and is used for various purposes and its production is linked to its economic importance, requiring the use of means and methods that enable the increase of its production, and one of them is fertilization with nitrogen. The objective of this work is to carry out a brief literature review on the importance of nitrogen for the corn crop, highlighting the benefits of its use and the need for its use in the crop. Plants need many nutrients for their development, and nitrogen is one of the main nutrients, being important for many chemical and physical functions in the plant. In addition, nitrogen is necessary in the corn crop, as it is a nutrient that is required in large amounts and has a great impact on crop production. Nitrogen has many benefits in the corn crop, as it is essential to the plant and to many crops, providing benefits throughout the plant, ensuring an increase in production components. However, the importance of nitrogen in the crop, refers to the plant, its use in the corn crop and the benefits provided, which generate positive results for its use, increasing various components of crop production, demonstrating that it is important for the crop, in its development and in the increase of maize productivity. Thus, it is noted that nitrogen is very important for the development of corn, composes several chemical and physical functions of the plant, it is necessary in the corn crop due to its requirement, provides many benefits to the crop, increasing production components and has many good results with its use in corn.