Thailand and the Republic of Korea concluded a Memorandum of Understanding for Scientific and Technical Cooperation between the Ministry of Science, Technology and Energy of the Kingdom of Thailand and the Ministry of Science and Technology of the Republic of Korea on 25th March 1982 and later an Agreement on Scientific and Technological Cooperation between the Government of the Kingdom of Thailand and the Government of the Republic of Korea was also concluded on 11th June 1985. No significant result was produced from those agreements, except the exchanges of visits of the officials concerned. However, a breakthrough was made by the visits of Her Royal Highness Princess Chulabhorn, who is currently the President of the Chulabhorn Research Institute in Thailand. After a Memorandum of Understanding was concluded between the Chulabhorn Institute and the Korea Institute of Science and Technology (KIST) on 17 May 2005, tangible plans of cooperation on biological research have been actively pursued. It is expected that fruitful result from the cooperation will bring about benefits for both sides. In 2007, HRH signed another MOU with the Kwangju Institute of Science and Technology (GIST) to cooperate in the field of environmental technology. Recently, during 7-14 June 2009, Her Royal Highness Princess Chulabhorn made a visit to Busan to attend the 3rd WHO International Conference on Children’s Health and the Environment: from Research and Knowledge into Policy and Action.