In the course of its evolution,local knowledge has special value to the formation of the Tomb-sweeping culture and vice-versa.

This article is mainly analyzing Organized Skepticism facing the challenges of the local knowledge,the tacit knowledge and the cutting-edge knowledge to point out the questions about "ought to be",proposing the democratic norm,the encouraging norm and the inclusive norm according to the characteristics of the object to be assessed.

Based on the ethnographic research,the author points out that the essence of local knowledge is a kind of cultural believes,which consists of three parts in rural community:official-like knowledge,popular knowledge and traditional knowledge.

This paper,taking the ecological salvation of stone desert in the limestone mountainous areas as an example,discusses the value of local knowledge in maintaining a weak ecological system.

The rice-fish agricultural system of Longxian Village in Qingtian County,Zhejiang Province,as a kind of unique local knowledge assimilated with local society,has long existed.

The paper puts forward the idea to study cross-cultural communication from the prospective of the local knowledge,and explains the function,methodology of the prospective.

With the development of the modern village medical treament system and the western medicine substitution compulsively in curative function,Hmong's local medical knowledge is in facing of double puzzledom its in heritance and protection protecti.

Taking goldthread plantation by the Tujia ethnic group as an example, the paper discusses about the inheritance and protection of local ecological knowledge of Chinese ethnic groups, in the hope of developing and using forefathers ecological wisdom to meet the ecological challenges confronted by human beings nowadays.