Agatha Christie(1890--1976),a famous woman detective novelist,playwright and one of three great masters of reasoning literature.Her representative works,A Murder on the Eastern Express,A Murder by the Nile,are both welcomed warmly by many people.Agatha Christie is known as the Queen of reasoning novels all over the world. Her works in English are sold more than 1 billion copies,besides, they are translated into more than 100 languages, which are also sold more than 1 billion copies.She created 80 detective novels and collections of short stories,19 plays and 6 novels which are published with the pen name of Mary Wistemykot.The number of her works is so great that it is just after the number of Shakespare's works.She was born in Dewen shire,Britain on September 15th 1890. And when she was 85 years old, she died at her home which was in Oxford shire,Britain.She was burried in the Saint Mary Cathedral.Agatha Christie gained cultural qualities wholely from her mother. Her mother was a unique woman in characteristics with active thinking mode. Agatha Christie married for two times, and her first husband was a army commander who hoped to become a pilot. Her second husband was an archeologist.