Douyin, China’s version of TikTok, will limit use of the platform for children to 40 minutes a day.
The rules will apply to users under 14, who have been authenticated using their real names, and who will be able to access it between 06:00 and 22:00.
Parent company Bytedance announced the app’s Youth Mode in a blog post, saying it is the first short-video company in the industry to have these limits.
It comes as China cracks down on teenagers’ use of technology.
According to Douyin’s user agreement there is no minimum age on the platform, but under 18s must obtain the consent of a legal guardian. On sister app TikTok the minimum age is 13.
“Yes, we are more strict with teenagers. We will work harder to provide quality content so that young people can learn and see the world,” the post said.
Last month, under-18s in China were banned from playing video games during the week, and their play was restricted to just one hour on Fridays, weekends and holidays.
And in February, Chinese children were banned from taking their mobile phones into school.