The main character, Anne Shirley, doesn't have any children in the book. The story follows her journey from her arrival at Green Gables as an orphan to her adulthood and eventual marriage to Gilbert Blythe.
If you're interested in Anne and Gilbert's children, you can find them in the subsequent books of the series:
* Anne of Avonlea: Anne and Gilbert have their first child, James "Jem" Blythe.
* Anne of the Island: Anne and Gilbert have their second child, Walter Blythe.
* Anne's House of Dreams: Anne and Gilbert have their third child, Diana Blythe.
Let me know if you'd like to know more about any of Anne's children!