His chief work is a Historia Francorum, or Libri v de Gestis Francorum, which deals with the history of the Franks from the earliest times to 653, and was continued by other writers until the middle of the twelfth century. It was much in vogue during the Middle Ages, but its historical value is now regarded as slight. It has been edited by G. Waitz and published in the Monumenta Germaniae Historica: Scriptores, Band xxvi (Hanover and Berlin, 1826-1892).
He also wrote a Vita Abbonis, abbatis Floriacensis, the last of a series of lives of the abbots of Fleury, all of which, except the life of Abbo, have been lost. This has been published by J. Mabillon in the Acta sanctorum ordinis sancti Benedicti (Paris, 1668-1701).
Aimoin's third work was the composition of books ii and iii of the Miracula sancti Benedicti, the first book of which was written by another monk of Fleury named Adrevald. This also appears in the Acta sanctorum.
Aimoin, who died about 1010, must be distinguished from Aimoin, a monk of Saint-Germain-des-Pres, who wrote De miraculis sancti Germani, and a fragment De Normanorum gestis circa Parisiacam urbem et de divine in eos ultione tempore Caroli calvi. Both of these are published in the Historiae Francorum Scriptores, Tome ii (Paris, 1639-1649).