Inventory is one that represents an investment of great importance for MICRO-BUSINESSES, this according to the relationship it has with other assets, and are of great importance for sales, as well as essential to achieve profit optimization. The objective given in this research study is to analyze the importance of inventories by means of a bibliographic investigation predicting the effectiveness of their administration in Micro-businesses. In the following investigation the methodology of documentary analysis was used, where the purpose is to be able to arrive at an analysis of the administration techniques to carry out an inventory and recognize the importance that should be given to it in Micro-businesses, theoretical foundations on the administration of inventories in Micro-businesses will be detailed, factors that are used to carry out inventories. It was concluded as the techniques to carry out the inventory were known and attached, the probabilities that are given to have successful operation, profit and growth in companies, which allows generating profits for micro-businesses.