Chinese state media have welcomed the news China is reforming its decades-old one-child policy, with one editorial saying it “echoes the people’s will”.
But right groups have said the measures do not go far enough and restrictions should be abolished altogether.
On Thursday, the government said it was relaxing the rules to allow all couples to have two children.
It said the decision was made because of its rapidly ageing population and to help support the economy.
In a statement posted on its website on Friday, China’s National Health and Family Planning Commission said 90 million couples would be eligible for the new two-child policy.
But it did not say when the policy would be implemented.
Currently, families who want a second child will still have to apply for approval – but officials would work towards replacing the approvals system with a registration system, the commission said.