Yesterday, i was confirmed that the Vice President Xi Jinping would takeover from President Hu Jintao as the party's general secretary.
He will now formally take over as president early next year, with the current vice premier Li Keqiang, as prime minister.
Following the announcement, the United States said it hopes China's new leaders will play a greater role solving global problems.
A spokesman said the US relationship with China was a priority for President Barack Obama as he enters his second term.
He said Beijing's leadership was critical on issues such as North Korea, Iran, climate change and the global economy.
Kim Jong-Un, the leader of North Korea, which considers China its closest ally and depends on the country for economic aid, offered his congratulations to Xi Jinping.
Meanwhile, Japan said it hopes to foster "mutually beneficial" relations with China's new leadership.
The two countries remain embroiled in a heated dispute over the sovereignty of a group of islands in the East China Sea.
This morning its was confirmed that the President Obama will meet the leaders of China and Japan on the sidelines of the East Asia Summit in Cambodia next week.
The talks between Chinese Premier Wen Jiabao and Japanese Prime Minister Yoshihiko Noda will aim to ease tensions between Asia's two largest economies.