The comparative study of sovereign policy of Na Yann Cheng and Chang Ling in Sinjiang. Na Yann Cheng and Chang Ling were the government officials in Sinjiang during Ja Dow period in Ching dynasty. One of them was suggestive and progressive, the other was concessive and negotiated ideals and conducts for ruling over Shinjiang, to be an intense contract. We disputed their achievements difference, but the development of current Sinjiang's social and historical reflection in Sinjiang possessed the critical influence. The paper by historical study one reference to cultural variety in Ethnology and in contrast with functional point, as well as the points of Sociological theory. We analyzed this causation and political structure and paid attention to wholeness for military, national defense and racial relationship development, making a macroscope investigation for the territorial study, in order to know the weaknesses and traits about the ruled policy in Sinjiang during the Ja Dow period in Chiang dynasty. We are aware of the connection and importance about religion and races, to provide us with the improved reference for ruling over Sinjiang in the future.