26 January 2017 Last updated at 08:09 GMT
These children are called young carers, and while many of them are happy looking after a disabled - or sick - relative they also face many difficulties.
Morgan's mum has a problem with her muscles which means she can't stand up or move around for long periods.
So, Morgan helps out around the house, cooking dinner, cleaning, walking the dog and other things that need doing.
He is one of around 700,000 young people in the UK who are caring for a family member.
Jenny went to meet him to find out a bit more about his day to day life.
Did you know that right now, across the country, there are hundreds of thousands of children who are looking after a parent, brother or sister?