Premier Wen will soon step down from his role, and is paving the way for his successor Premier Wen added that he was confident the US and Europe would fully recover from their current economic problems.
His comments came on the opening day of the World Economic Forum in Dalian.
China is the world's second-biggest economy, but it has been criticised for some of its economic policies.
The US has been one of its most vocal critics, and the two have clashed over China's trade and currency measures.
China has been accused of focussing too much on driving export demand, and keeping its currency artificially weak to achieve this end.
In his speech on Wednesday, Premier Wen said that China would now focus on boosting its domestic demand, and this in turn would help the global economy.
"I am confident that China's economy will make a new contribution to robust, sustainable and balanced growth in the global economy," Premier Wen said.
The Premier continued that while it would be important to continue the country's rapid urbanisation, China would need to grow in an environmentally sustainable way that also lifts the population's living standards.
The BBC's Juliana Liu is at the World Economic Forum in Dalian and said that while Wen Jiabao was full of confidence about the state of the global economy, many of the delegates did not share that optimism.
Instead they were worried that any US economic recovery would be slow, while the European Union would struggle to resolve its debt crisis.
"There is a sense that the EU and US debt crises will roll on," she said.