The marketing of livestock is an activity that adds value to animal products. It conducted in Niger, through more than 635 livestock markets managed by local authorities. This traditional management method has limited performance and has shown no room for improvement. Self-management is being tested to assess the impact of livestock marketing on the Bermo self-managed market. The methodology consisted of the development of questionnaires and interview guides following the strata of players driving the market based on bibliographic research. These tools were administered at the level of eleven strata bringing together 160 actors to collect primary data. Data analysis showed that the self-managed market improves livestock presentations and sales. It facilitates fair transactions and offers better prices, according to 90% to suppliers, in a testimonial system without additional charges. Wholesalers and collectors benefit from facilitating the process of purchasing livestock within the market. Despite the improvements in sale prices, the added values of suppliers and processors remain low compared to the added value of traders (more than 50%). Tax revenues constitute a significant source of income, the redistribution of which on the basis of a distribution key allows for proper functioning and shared and sustainable management of infrastructure. The self-managed market has a positive impacton the social and economic development of the community. It is an interesting model that can be popularized and applied on larger scales.