Ellen key was a famous Swedish educator, woman activist and writer at the end of/kloc-0 and the beginning of the 20th century, and one of the advocates of the new movement. She devoted all her life to the study of children's education and women's issues, and put forward extensive and radical views on gender, love, marriage, moral quality and other issues. Her main work, Children's Century, is regarded as a classic of new education and has become a world-famous classic of children's education. Allen Key attaches great importance to children's education.