Farmers`` dance of China`s Korean ethnic group was decided to be inscribed on the representative list of the intangible cultural heritage of humanity in the fourth session o f the intergovernmental committee for the safeguarding of the intangible cultural herita ge of UNESCO held in September 2009. Since Korean farmer`s dance and music whic h is commonly known as the ``Nong-ak`` have been considered as a Korean cultural he ritage without a doubt, the inscription of Farmers`` dance of China`s Korean ethnic gro up as a Chinese cultural heritage has caused the heated debate on which country ow ns the culture. It is obvious that the UNESCO convention has brought on this kind of cultural war on the ownership of certain cultural heritages, which is not intended from the very purpose of the convention. In this paper I examine the UNESCO convention for the safeguarding of intangible cultural heritage focusing on the history and background of establishment of the conv ention and its contents. Secondly Japanese protection system of intangible cultural pr operties is investigated in terms of the history, purpose and means of protection to lo ok at how the UNESCO convention has been accepted or utilized at national level. Fin ally I look into the Japanese response to the UNESCO convention focusing on the first 2008 announcement and the second 2012 announcement of the nomination of WASH OKU; Traditional dietary cultures of the Japanese to the representative list of the conv ention which can be the repetition of Gastronomic meal of the French which was inscr ibed on the representative list in 2010 and implies that the first announcement by Jap anese government has been changed. By this work it can be concluded that the first Japanese decision was facile and overbearing which was made without careful consid eration about fundamental difference between the UNESCO convention and the Japane se protection act of intangible cultural properties, which means the task to reconsider prudently each system has been left.