The Duchess has chosen to read childhood classic The Owl Who Was Afraid of the Dark by Jill Tomlinson.
It follows the story of Plop, a baby owl, who is helped by others to grow in confidence and overcome his fears.
The Duchess's reading will air at 6.50pm on 13 February. She will be the first royal to read a CBeebies story.
Children's Mental Health week runs from 7 to 14 February and the duchess chose the book because it chimed with this year's theme of "growing together".