China over reliant on hospitals, needs more family doctors: WHO

"As China's health challenges ... continue to mount, with an ageing population, so too will the demands on the country's health system, along with the costs," WHO China representative Bernhard Schwartlander said in a commentary, pointing to rising rates of cancer and cardiovascular disease.

"It is simply not sustainable to meet these challenges in a health system that relies on hospitals."

China has been trying to overhaul its healthcare system, including promoting local, grassroots medical facilities and pledging to raise the number - and quality - of local GPs. However, low doctor salaries and a lack of trust by patients in local health centres has slowed progress.

The WHO pointed to long queues, difficult booking systems and tight consultation slots that often last just a few minutes.

"(It is) a symptom of the enormous patient load and pressure which doctors in China face every day," it said. "But this is not how things should be in a well-functioning health system."