The ambiguous and ironical duality embodied in John Ford`s ``Tis Pity She`s a Whore emerges from the different view points toward the religious taboo of incest. From the point of Christian moral view, Jiovanni and Annabella are the cursed sibling filled with lust who leads social order to confusion and other people to misfortune. But from the critical view point against the contradictions of religious doctrine, they are the victims of oppressive and corrupted society. It is remarkable that the tragic structure of the play is different from those of other traditional tragedies. Although Jiovanni and Annabella are the main characters, they play the main roles only in the beginning and end of the play. From Act II to Act IV, the main parts of the play are covered with other characters` hypocrisy, foolery, covetousness, and wickedness. Their evil deeds are compared with Jiovanni and Annabella`s incest. Their corruption shows an ironical effect that brings the sibling`s incest into true love. Therefore, Jiovanni and Annabella`s incest makes the existing moral order skeptical and makes the audience question of the true justice. In this way, the incest of Jiovanni and Annabella produces a complicated meaning of political standard contradicting moral order. It is shocking that Ford made Jiovanni and Annabella tragic protagonists, but it is certain that their distorted love becomes the dramatic means to figuratively express the confused and corrupted society. Larry S. Champion indicates that this play is not only a tragedy of individual but a tragedy of society. The society forcing the moral order that Jiovanni and Annabella are violating is the place filled with betrayal, covetousness, lust, and revenge. The subversive desire in this play is embodied in the fact that the love of Jiovanni and Annabella is portrayed not as a dirty lust and unforgivable sin but as a natural love from inevitable attraction. In conclusion, Ford developed a critical situation that makes any moral judgement difficult, and it results in the distrust and questioning of the traditional social moral standard itself.