China is to relax its policy of restricting most couples to having only a single child, state media say.
In future, families will be allowed two children if one parent is an only child, the Xinhua news agency said.
The proposal follows this week’s meeting of a key decision-making body of the governing Communist Party.
Other reforms include the abolition of “re-education through labour” camps and moves to boost the role of the private sector in the economy.
The BBC’s Celia Hatton, in Beijing, says most of the changes have already been tested in parts of the country.
Officials announce their plans well in advance to gain the consensus they need, she adds.
Ageing population
The latest announcements are contained in a 22,000-word document released three days after the Third Plenum meeting of the Communist leadership in Beijing.
Traditionally reforms are expected from the Third Plenum, because new leaders are seen as having had time to consolidate power. President Xi Jinping took office last year.
The one-child policy would be “adjusted and improved step by step to promote ‘long-term balanced development of the population in China'”, Xinhua said.
China introduced its one-child policy at the end of the 1970s to curb rapid population growth.
But correspondents say the policy has become increasingly unpopular and that leaders fear the country’s ageing population will both reduce the labour pool and exacerbate elderly care issues.
By 2050, more than a quarter of the population will be over 65.
The one-child policy has on the whole been strictly enforced, though some exceptions already exist, including for ethnic minorities.
In some cities, both parents must be only children in order to be allowed to have a second child.