Seongsechuyozeungyi, the Criticism against Seongsechuyo as Catholic Catechism was written by Hong Jeong-ha who was a poor confucianist holding no office in King Jeongjo’s Reign. There were 4 articles of Anti-Catholicism in the book Daedongjeongro containing the article Seongsechuyozeungyi. In this criticism, he focused to criticise, with a lot of spaces, the theory of Catholic monogamy which was based on the thought of equality. And his criticism of Catholic Catechism Seongsechuyo came to refutting the critical theory against confucian sacrificial rites. And next to that, disputting the Catholic theory of God the great king and father. His criticism was for keeping the confucian theory loyalty and filial piety and the three bonds and the five moral disciplines in human relations holding a strong will of sticking to them. The confucianist Hong adhered to the thought that they should not have the same value between the Confucian Humanity and the Christian Love, because of the reason that the catholicism harms the confucianism. And he strongly denied the four most important Catholic Catechism such as the theory of God’s creating the heaven and earth, of the incarnation and the redemption of Christ Jesus for all people, and of the trinity, except the theory of rewarding good deeds and punishing evil deeds. His writing of these Anti-Christianism has effected the critical ideas of Catholicism to scholars such as Jeong Beom-Jo and Kang Joon-heum. And he took acquired very famous effect that many confucianist agreed with it especially in the region from Choong-joo to Won-joo in the same period, and showed the standard opinion of Anti-Christianism to the confucianists in Kyeong-sang province in the last Choseon dynasty. He insisted on the prohibition of Catholicism, owing to it’s thought of equality of various classes and of both sexes, spreading to the common and lowly people and women. In this aspect we can distinguish his fundamental limites of medieval feudalistic thoughts focused on the maintaining the confucian patriarchal system. But his realistic opinion was very natural and useful in the aspects of Confucian viewpoints that the filial piety was the very great virtue by succeeding the memorial ceremony for his ancestors with respect and affection and that holding the inequal state system of based on the patriarchy was essential in Choseon dynasty.