The book "Plays of Ler Kamsar" is a thorough scientific study of the theater plays of the 20th century Armenian satirist Ler Kamsar. And from this point of view this is the first experience in the form of a book. The book is subjected to conditional sections-"Theatre Plays of Ler Kamsar", "Plays of Ler Kamsar: Performance in Alexandropol /1923/" and "Teaching Plays of Ler Kamsar at the University". In the first two parts the factual analysis of the period's reality is intertwined with the foundation of the writer's works and brings a new element to Armenian literature. The third and last part is closely related to the inclusion of the teaching of the writer's works in higher educational institutions, especially with regard to plays, which, of course, is an important necessity for presenting university programs in a new way. The book also includes original posters of the writer's performances, as well as fragments of the author's manuscripts in the form of photographs.