In the 17th century Spanish social atmosphere, Pedro Calderon de la Barca actively introduced the materials of Greek and Roman mythology into his plays. The pagan classic mythical characters of the Calderon’s play would have been a shock to the audience at the time. When Calderon sublimated the myth of Cupido and Psyche to the theme of the play, the Christian allegories which Calderon borrowed, “improved the imagination and intellectual experience” to the audience. While using key materials from Greek and Roman mythology, he took Catholic ideas in the same way as the biblical allegories. Thus, Calderone’s sacramental act is a compromise in the use of materials. Calderon showed the Catholic faith excellently through the veiled allegory of God, that is, the invisible Cupid in the play Psyche and Cupid. In Comparing the beliefs of other religions in conflict with Catholic faith during the Counter-Reformation, Canlderon marked the zenith of propaganda literature, which effectively demonstrated the mystery of the Holy Communion, a unique doctrine of Catholicism.