自1998年11月汤加与中国实现外交关系正常化以来，汤加与中国继续根据《联合国宪章》、《维也纳外交关系公约》和《维也纳领事关系公约》加强友好关系。汤加严格奉行一个中国政策。目前，大多数联合国成员国都是中小国家。然而，仍有很多国家从未进入过安全理事会。这是令人遗憾和不公平的。因此，中国支持并赞成包括汤加在内的中小发展中国家争取加入安理会和参与决策进程的机会，这是使安理会更加民主、透明和高效的重要途径。
Since the normalization of diplomatic ties between Tonga and China in November 1998，Tonga and China continue to strengthen their friendly relations based on the United Nations Charter，the Vienna Convention on Diplomatic Relations and the Vienna Convention on Consular Relations. The Kingdom of Tonga strictly adheres to the One-China Policy. At present，most of the UN members are small and medium-sized countries. However，most countries have never made their way to the Security Council. This is regrettable and unfair. Thus，the reason China support and speak in favor of the developing countries including the Kingdom of Tonga to increase the opportunities for the small and medium-sized countries to sit in the Council and participate in their decision-making processes. This is the important way to make the Council more democratic，transparent and efficient.
