The invention relates to a probiotic mixture of the protection of bees' health, and more specifically for the protection from microbial pathologies, such as those caused by Paenibacillus larvae, etiological agent of the American Foulbrood Disease (AFD).L'invention concerne un mélange probiotique de protection de la santé des abeilles, et plus particulièrement de protection contre les pathologies microbiennes, telles que celles causées par Paenibacillus larvae, un agent étiologique de la loque américaine (AFD).