The Greater Mekong Subegion (GMS) Economic Cooperation is a subregional economic cooperation mechanism involving the six countries located at least partly within the river basin – China, Myanmar, Laos, Thailand, Cambodia and Vietnam. Established in 1992, it is designed to strengthen subregional economic ties and promote economic and social development in the subregion.

大湄公河次區域經濟合作是由瀾滄江－湄公河流域內的六個國家，即中國、緬甸、老撾、泰國、柬埔寨、越南共同參與的一個次區域經濟合作機制，成立于1992年。其宗旨是加強次區域國家的經濟聯系，促進次區域的經濟和社會共同發展。

The program has been sponsored, coordinated and funded mainly by the Asian Development Bank. Its highest decision-making organ is the GMS Summit of Leaders, held every three years and hosted by a member state on the basis of alphabetical rotation. Policy direction for the program is discussed at the Ministerial Conference, under which meetings of senior officials and a range of working groups and forums in priority sectors are convened.

亞洲開發銀行是該機制的發起者、協調方和主要籌資方。領導人會議為最高決策機構，每三年召開一次，各成員國按照字母順序輪流主辦。日常決策機構為部長級會議，下設高官會、工作組和專題論壇等。

Since 1992, substantial progress has been achieved in implementing GMS projects in key areas such as transport, energy, power, infrastructure, agriculture, tourism, information and communications, environment, human resources development, and economic corridor development.

該機制成立20多年來，在交通、能源、電力、基礎設施、農業、旅游、信息通信、環境、人力資源開發、經濟走廊等重點領域開展了富有成效的合作。

China attaches great importance to the GMS economic cooperation, and actively participates in the planning and implementation of projects at different levels and in various fields, in an effort to improve the well-being of all member states.

中國重視大湄公河次區域經濟合作，積極參與各層次、各領域項目的規劃與實施，為促進各成員國民生和福祉做出了自身貢獻。