After finishing the eight-year school, he studied for two years at a vocational school at the Likhachev Automobile Plant. Then for ten years he worked as a milling machine operator, driver and locksmith. In 1962 Boris Gitin entered the evening acting department of the B.V. Shchukin Theater School, in the course of Marya Rubenovna Ter-Zakharova, which he graduated in 1966. In 1966-1968 he was an actor at the Central Children's Theater, from 1968 an actor at the Gorky Film Studio.

He made his film debut in 1964 (an episode in the film 'A Span of Earth'). He acted quite a lot, mainly in supporting roles. In the mid-1990s he 'left' cinema, led a reclusive lifestyle, did not communicate with any colleagues, was not a member of any unions or guilds. He worked, but this work was in no way connected with acting. He passed away in Moscow after a severe prolonged illness.