Alien invasion sci-fi movies had a very broad imagination and appeal, allowing the audience to feel the infinite possibilities and the spirit of exploration. These films often involved the conflict and cooperation between humans and aliens, as well as the survival and development of humans in the face of unknown threats. These plots could not only stimulate the audience's curiosity and thirst for knowledge, but also inspire people's thinking and creativity, thus promoting the progress of human culture and society. Of course, there were also some problems and challenges in sci-fi movies about aliens invading Earth. For example, how to portray the image and characteristics of aliens, how to present the culture and values of aliens, how to deal with the communication and cooperation between humans and aliens, and so on. These problems required the film production team to think deeply and explore in the creative process in order to produce excellent works. Alien invasion sci-fi movies had a very broad imagination and appeal, but there were also some problems and challenges. However, I believe that as long as the film production team continues to be innovative and improve, they will definitely be able to create more exciting and moving works.