Her writing career began when she was 6 years old, and she wrote The Story of the Rabbit. The protagonist is a rabbit named Rabbit. He has measles, and his friends come to see him. One of them is a big bee named Miss Bee.

In March, 200012000, she created two booklets related to the story of "Harry Potter", Magic Animals and Where to Find Them and Magic Quidditch, which was founded by a group of British comedians to promote social justice and help raise funds for the cause of poverty eradication.

On July 7, 2007, the seventh and last Harry Potter novel series Harry Potter and the Deathly Hallows officially ended. The author J.K. Rowling wrote the last chapter of this masterpiece. In addition, Rowling also said that she would write detective stories, which was a few years ago after writing the Harry Potter series.