Alibaba Cloud was the top provider, accounting for 46.4% of total spend while Tencent Cloud upped its share to 18.0%, followed by Baidu AI Cloud with 8.8%.
Canalys said all three cloud companies were quick to respond to the coronavirus outbreak in China and provided access to on-demand compute, artificial intelligence and other services to support government departments, businesses, research institutes and students.
"The benefits of cloud computing were demonstrated by the leading cloud service providers in response to the escalating coronavirus crisis," said Yih Khai Wong, senior analyst at Canalys.
"They provided free access for research institutions to accelerate drug screening for potential vaccines. Students also benefitted by accessing online learning tools setup on the platforms after schools were closed.
"This set the precedent for technology companies around the world that offer cloud-based services in their response to helping organisations affected by coronavirus."
For the full-year 2019, China's cloud infrastructure services spend by 63.7% to exceed US$10.7 billion.
Alibaba Cloud was ranked number one, accounting for 46.1% of the market, Tencent Cloud was second, with a 17.3% share while AWS was third, followed by Baidu AI Cloud.
Wong said the outlook for 2020 was positive, as organisations would assess their business continuity measures when the end of this current situation was reached and look to shift more applications to the cloud.
"The cloud companies that were quick to support existing and new customers over the last three months will stand to gain the most," Wong added.