Abstract This article aims to study George Bernard Shaw (1856 –1950) who wrote his plays in order to reveal his social ideas. His play, particularly Major Barbara (1907) and best portray his anti-capitalist views and his Marxist sidings. This play are about the portrayal of different classes, the dominant ideology, poverty, women's suppression, class conflict, and many other evils of a capitalist society. Shaw wrote Major Barbara to inform his audience of some of the social and political problems and to motivate people to solve these problems such as inequality. Barbara and her father believe in two different kinds of principles. This article intends to investigate this play and explore this issues from an Althusserian point of view. Applying such a method is that it would suggest a new way of reading Shaw's plays, ideas and tracing of Althusserian ideas in these plays. This study will also help its readers consider the social context to understand Shaw's socialist ideas better. According to Althusser, ideological authority is constructed by a powerful organization and creates submission in its subjects. The findings of the study show, how the ruling class of the society attempts to impose its ideology on people especially that of the working class. The study indicates that Shaw always considered his plays as a continuous challenge to force the people to consider their moral values and their origin.

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