His father was a lace drawer and sent him into a decoration studio where he was destined to wall decoration. Influenced by impressionist theories, he dedicated himself to painting at 17 years old.

In 1893, Pierre Eugene Montezin tried to expose in Salon of French Artists. Refused during ten years, he finally was accepted in 1903. In 1903, he became friend with Quost who taught him to draw and developed his taste for painting. Enlisted in 1914 for First World War, he will receive a military medal after battles in the Meuse. At the end of the war, Pierre Eugène Montezin returned to painting and exhibited in the Salon of French Artists. He came back to Paris in 1919, marries and lives with the family. He moved to Neuilly-sur-Seine with his wife and daughter in 1924 and divides his time between work in the workshop and stays Veneux-les-Sablons where he owns a house he decorated with frescoes. Pierre Eugene Montezin returned to painting since his return and exhibited at Salon of French Artists.

In 1933 he was unanimously elected president of the jury of the Salon des Artistes Français. Upon taking office ceremony, 237 paintings are exhibited. It also sets in 1936 in the Journal Gallery Champs Elysees in 1938 at the Galerie Durand-Ruel, avenue de Friedland, and in 1943 at the Galerie Raphael Gerard. Rewarded for his painting, he obtained many medals, including Rosa Bonheur Prize in 1920, and was nominated Jury and Committee member of French Artists Salon after received Honoured medals. In 1923, he was nominated Chevalier of Legion d’Honneur, and was elected member of Beaux-Arts Academy in 1940 at Vuillard Chair. Pierre Montézin died at the age of seventy years old, suddenly on July 10, during a working visit to Brittany. He was found on the side of a road along with painting and a few canvases.