Piotr Buchkin was born on 22 January 1886 in Sofronovo village, Tver Governorate, Russian Empire.

He engaged in School of Technical Drawing of Baron Alexander von Stieglitz, where studied of Nikolai Koshelev.

In 1912–1914 as a pensioner of the Academy of Arts Buchkin visited Italy, France, Germany, Spain and some other countries.

After October Revolution in 1918–1921 Peter Buchkin serves as a team gunners division submarines of the Baltic Fleet.

In postwar years Piotr Buchkin taught at the Vera Mukhina Art and Industry Higher School, where he was professor (1952), a Head of the Department of Monumental-Decorative Painting (1951–1955, 1962–1965).