Due to the upcoming of Asian Economic Community, Thai tropical fruits have been in the light of research stream. This research aims to study the supply chain, potential of production, competitive situation, opportunities and threats of Durian, Mangos teen and Longkong inThailand, Cambodia and Vietnam. The data was collected from gardeners, collectors, exporters, consumers and related organizations from the three countries. The result shows that Thailand currently gains competitive advantages over others in terms of production and logistics. However, Thai Durian and Mangos teen have only short term competitiveness due to the fact that Vietnam and Cambodia are capable of commercial production. On the other hand, the two countries can produce Longkong for domestic consumption. As a result, Longkong still has the highest competitiveness in both short and long term. Specifically, Vietnam has rising potential competitiveness because the government strongly supports fruit measures such as production zoning and GAP. The impact of AEC on Thai fruit market has been forecasted. The recommendation for Thai farmers and government policy are suggested.