The Prime Minister is on the trip with four cabinet ministers and 43 business leaders, has been hailed as a financial success to try and improve business relations between the two countries.
The visit is Britain's largest delegation to the country, and has been called a "vitally important trade mission" by Mr Cameron. The PM is aiming to build on an already growing business relationship - UK exports to China increased by 44% in the first eight months of this year.
The visit is Britain's largest delegation to the country
This is Cameron's first visit as Prime Minister to the world's second largest economy and he promised "closer engagement" with China and has said "banging the drum for trade" is key to UK foreign policy.
"Our message is simple: Britain is now open for business, has a very business-friendly government, and wants to have a much, much stronger relationship with China," he said.
Chancellor George Osborne has said that this is not a new chapter in British relations with China, but that the country had reached a stage in its development where it was "more likely to want the things which Britain is good at."