The application of semiotic theories to the study of cinematics is a new branch of semiotics in the 1960s, that is, to study films as a special symbol system and ideographic phenomenon. Films provide semiotics with extremely complex cultural objects in time and space. The Shawshank Redemption is full of various types of signs. From the perspective of semiotics, this paper sorts out the development history of film semiotics, analyzes in detail the linear narrative and alternate narrative in The Shawshank Redemption, and interprets the cultural signs, in order to provide reference for the current Chinese films.