My thesis, according to the relationship of Chunqiu Gongyang（春秋公羊傳）and Xun-zi philosophy, contrast with Chunqiu Zuozhuan（春秋左氏傳）and illustrate the ritual thought of Xun-zi of Gongyang and Zuozhuan, which by study method of context of rites. The texts have seven, which about the rite of Classic and its commentaries, the first about the value of practise of funeral rite in ‘Duke Yin 1st year’（隱公元年）. The second text is about moral value of rite of present in ‘Duke Huan 2nd year’（桓公二年）. The third text is about dialetical thinking of moral and utility, which the situation of King Zhou baging money and things of funeral rite in ‘Duke Huan 15nd year’（桓公十五年）. The fourth text is about the conflict and revenge of keep royal respect or family emotion in ‘Duke Zhuang 1st year’（莊公元年）. The fifth text is about immoral behavior of arbitrarily leaving country of the sovereign in ‘Duke Zhuang 23st year’（莊公二十三年）. The sixth text is about the over rite of wedding of the sovereign in ‘Duke Zhuang 24st year’（莊公二十四年）. The seven text is about moral idea of politics of the sovereign in the war process in‘Duke Xuan 12th year’ （宣公十二年）. I according to the ritual morality of Xun-zi also, analyse the significant of fine words（Wei-Yan-Da-Yi 微言大義）of the seven texts and discuss four aspects - the meaning of system of rites and objectivity, the principle of cultivation and present of emotion, the order of politics and moral, the principle of rule and end the disorder. According to the idea of rite of Gongyang and Zuozhuan which implicating the thought of Xun-zi, I conclude that Gongyang and Zuozhuan which inclouding the historical context of confucianism are historical source of confucian research.