This paper analyzes the differences of Chinese and Western movies, especially the penetration point of family affection。 It takes the movie Rain Man and Sea Heaven as an example。 Both the Sea Heaven and Rain Man are about autistic children and their families, but there are some differences in two movies in expressing of affection entry point。 Rain Man shows the family affection because I love you so I love you to the deep,while Sea Heaven shows the affection that I love you because I’m your father。 Through the study of the two films, it can be understood that the differences in expression of the family affection between Chinese and Western, as well as their inner forms so that the audiences can grasp the soul of the film。 Before the paper deepens into the penetration point of family affection of the two movies, the introduction of the background and outline of the two movies is essential。