China approved an education law that aims to reduce the pressures of excessive homework and intensive after-school tutoring, state media said.
Parents are being asked to ensure their children have reasonable time for rest and exercise, and do not spend too much time online.
In August China banned written exams for six and seven year olds.
Officials warned at the time that students’ physical and mental health was being harmed.
In the last year the state has also introduced a number of measures aimed at moderating children’s “addiction” to the internet and popular culture.
The latest measure was passed on Saturday by the National People’s Congress Standing Committee, the country’s permanent legislative body.
Local media reports suggest it encourages parents to nurture their children’s morals, intellectual development and social habits.
Local government will be responsible for implementation, such as providing funding for “enriching extra-curricular activities”.
In July, Beijing stripped online tutoring firms operating in the country of the ability to make a profit from teaching core subjects.
The new guidelines also restricted foreign investment in the industry and disrupted the private tutoring sector which was worth around $120 billion before the overhaul.
At the time, the move was seen as authorities trying to ease the financial pressures of raising children, after China posted a record low birth rate.
Education inequality is also a problem – more affluent parents are willing to spend thousands to get their children into top schools.