Heidi is a world famous work by Swiss woman writer johanna Spiri. Heidi, the hero, is very popular with young friends. Heidi, as a classic youth book, has become one of the best sellers in the world. Heidi is an orphan in a mountain village in the Swiss Alps. She and her grandfather live in the alpine pasture. She once went to Frankfurt to accompany Clara, a paraplegic rich daughter, and received an enlightenment education. After that, Clara was sent to the mountains, recovered and learned to walk under the care of Heidi and her grandfather. The author created a kind and helpful girl image through this story, which has been deeply loved by readers for more than 100 years.