Alien is a hugely influential science fiction horror film released in 1979, directed by Ridley Scott and starring Sigourney Weaver. The box office of the movie was very successful. It was an important image created by Hollywood, giving birth to related literature, video games, memorabilia, and three official sequels. The film became popular with the movie star Sigourney Weaver, and the image of the female hero in the film broke the previous Hollywood action film genre. In addition to the performance of Xenomorph, the heroine Ellen Ripley's story also runs through the entire series.

The name of the movie refers to the main enemy in the movie, an unknown extraterrestrial life form with extremely strong aggressiveness. During a routine investigation of an unknown planetary signal, an alien larva attacked and infected a space crew member. After the alien boarded the spaceship, soon the entire crew of the spaceship was threatened with their lives and was eventually destroyed. However, due to the limitation of the production technology at the time, the Alien series did not film the weightless state in the spacecraft, including the latest "Prometheus" and so on (but it can be judged that the crew has set artificial gravity technology in this era. ).

This is a classic science fiction film in film history, won the 52nd Oscar for Best Visual Effects Award[3], and was ranked sixth in AFI's 100 Years of Thriller Movies.