Baccio Maria Bacci was taught by Adolfo de Carolis and Giovanni Fattori in the Florentine Academy. In 1913 he went to Paris where he associated with intellectuals and met the poet Apollinaire. From 1915 to 1918 he fought in the First World War. After the War he exhibited in Geneva in 1920 and, in 1921, at the great exhibition of the Fiorentina Primaverile. During the period up until the outbreak of the Second World War he lived and worked in Fiesole and his home became a retreat for painters, writers and musicians. In the war years, from 1941 to 1944, he was appointed President of the Commission for the protection of works of art for Florence Municipality Council, a position of great responsibility. From 1948 he started exhibiting regularly again and then, from 1953 to 1955, he devoted himself entirely to execute the large mosaic in the apse of S. Matteo in Salerno Cathedral. When he had finished this job he decided to move to Rome where he lived until 1972. In January 1969 Baccio Maria Bacci organized his first personal exhibition in Rome at the Galleria Hermes. At the end of 1972 he returned to Tuscany, to Olmo, where he worked painting and writing until the year of his death.