Storage practices determine the quality and added value of peanuts as well as their contribution to household nutrition. The objective of the study was to characterize the types of warehouses and methods of peanut protection. A survey was conducted among 500 stakeholders (240 producers, 160 processors and 100 traders) selected by random sampling. Data analysis was carried out using descriptive statistics. The results show that the stakeholders mainly store shelled or unshelled peanuts in polypropylene bags. They adopted as warehouses their residential houses (64.7%); mud stores (11.8%); and stores made of final materials (23.5%). The choice of peanuts to be stored is made on the basis of the criteria of absence of mold and rot (38%), without impurities (37%) and without holes (25%). The average quantity of peanuts stored is 1,049.63 kg; 1,300.7 kg and 98.81 kg respectively for producers, traders, and processors. The majority of respondents store peanuts for a period of three months (80%). Only 37.8% of stakeholders apply any treatment to stored peanuts, primarily using phytosanitary products. The main storage constraints concern pest and parasite attacks (58%) and poor sales (38.6%). These constraints are more acutely felt by producers. Adopting appropriate types of warehouses and understanding protection methods are essential prerequisites for preserving peanut quality before sale or processing in the south-central region of Niger.