Her mother, Natalia Petrovna Krasnoyarskaya, now director at Bolshoi Theater, learned classical singing and performed romance) and period songs.

At the end of her studies, Maria enrolled at the Moscow Art Theatre School, which she left after a year to join the Boris Shchukin Theatre Institute.She directs the program "Expand the circle", plays in various productions of the classical and contemporary repertoire, notably at the Pokrovka Theater, under the direction of Sergei Artsibachev.

Then her following main roles on the big screen include, in The 4th Wishes (2003), or, among the fantastic team of Timur Bekmambetov, on the set of Night Watch (2004).

In 2005, Poroshina re-assumes the role of the Great Magic Svetlana in the sequel, Day Watch, a film which at the time achieved the most box office entrances.

In 2007, Polina appeared in the television series "On the way to the heart", and in 2010, with her father, the role of Christine in "La compensation".