As one of the most important forms of science communication, science fiction film has experienced continuous and tremendous changes during the past more than a hundred years. The results about categorical data analysis of Top 100 science fiction films show that the linkage type elements of science fiction film become more and more varied and audiences regain their faith in science. Moreover, the categories of linkage science are diversified and marked with the stamps of the time; with a low barrier to entry, the subject tendency and worldview of films are adapted to the reality gradually; And audiences tend to love the film which is both technical and thoughtful with different forms of international cooperation. Communication subjects should improve scientific literacy and build up their imagination; the field of science adds fuel to the flame and the area of expertise has paid great attention to the science fiction film. In addition, policy environment becomes more flexible and social aesthetic flavor changes with the times. All those factors contribute greatly to promoting science communication in Chinese science fiction film.