This chapter studies family micro business in Chile and economic development generated around them, specifically in the commerce sector. Firstly, it introduces the micro, small, and medium enterprises context. Then, through a mixed methodology, narrative, and descriptive based on information from secondary sources such as legal bodies, reports, and databases generated by various Chilean State entities, it determines what is the micro family business in Chile and enterprises that are concentrated in the grocery stores. And finally, obtaining as main conclusions, the experience of these microentrepreneurs in opting to establish themselves as companies through an exceptional legal regime, based on the benefits gained from participating in the public technical cooperation program Grocery Stores of Chile is presented.