In the sphere of culture of the Republic of Mari El is working since 1974. During this period, the post of secretary-clerk in the ministry of culture, it rose to the post of first deputy artistic director of one of the leading professional theatres of the republic, having studied and mastered in full the specifics of the administrative-economic, financial activity of the theatre of the case, the repertory policy of work with the audience. She got a good practice, occupying the post of the deputy director of the Republican puppet theatre and the G. Konstantinov Academic Russian drama theatre.
In August 2000, Tsaregorodseva L.A. came to work in the Mari state opera and ballet theatre on the position of the deputy artistic director for commercial issues, and in 2001 was the 1st deputy.
A separate side of her activity − organization and carrying out of festivals of the opera and ballet art «Winter evening» and in honor of the great Russian ballerina Galina Ulanova. She, as an executive director, directs literally every step of their organization and carrying out, since the formation of the posters and finishing with the routine administrative work. Correctly, professionally competent and responsible maintains business relations with new partners, attracting them to participate in these projects.
2008 − Honorary diploma of the Ministry of culture, press and nationalities of the Republic of Mari El
2009 − Honorary diploma of the Government of the Republic of Mari El
2013 − Honored Worker of Culture of Republic of Mari El