小说描写在19世纪末期，火星人从即将灭亡的火星上来到地球，对英国发动战争，进而希望统治全世界。人类开始和他们进行了友好的会晤，被扼杀后才同火星人开始了战斗。

作者以目击者和当事人的角度描写了人类对火星人的反击，但是由于双方科技相差太远，根本无法对抗火星人。火星人摧毁城镇，屠杀人类。而且火星人只是将人类视为一种低等动物，甚至以人类作为食物。

就在火星人即将取得胜利的时候，他们受到了地球上细菌的感染而全部死去。

The War of the Worlds is a science fiction novel by English author H. G. Wells. It first appeared in serialized form in 1897, published simultaneously in Pearson's Magazine in the UK and Cosmopolitan magazine in the US. The first appearance in book form was published by William Heinemann of London in 1898. It is the first-person narrative of an unnamed protagonist in Surrey and that of his younger brother in London as Earth is invaded by Martians. Written between 1895 and 1897,[2] it is one of the earliest stories that detail a conflict between mankind and an extraterrestrial race. The novel is one of the most commented-on works in the science fiction canon.

赫伯特·乔治·威尔斯，英国著名小说家，新闻记者、政治家、社会学家和历史学家。他创作的科幻小说对该领域影响深远，如“时间旅行”、“外星人入侵”、“反乌托邦”等都是20世纪科幻小说中的主流话题。

Herbert George Wells, known as H. G. Wells — was a prolific English writer in many genres, including the novel, history, politics, and social commentary, and textbooks and rules for war games. He is now best remembered for his science fiction novels, and Wells is called a father of science fiction. His most notable science fiction works include The Time Machine (1895), The Island of Doctor Moreau (1896), The Invisible Man (1897), and The War of the Worlds (1898).