According to introducing, UNWTO is the world's most influential international intergovernmental organisation, has 159 member countries, has its headquarters in Madrid, Spain for its memory about China.China joined the group in 1983.In November 2007, the UNWTO 17th plenary meeting, China proposes to Chinese as the official language.General assembly adopted the China proposed and passed to amendment the articles of association of the world tourism organization of article 38 of this law, namely "the organization of the official language is Arabic, Chinese, English, French, Russian and Spanish".