The invention discloses a visual inspection method of characters on a bag making line. The visual inspection method includes: S1, when a film drawing assembly translates and conveys bag films from a printing station to a bag making station, once the film drawing assembly translates L, it sends a collection signal to an image collection assembly, wherein every time the film drawing assembly conveys a bag film, the corresponding translation distance is L; S2, image collection: after receiving the collection signals, the image collection assembly conducts image collection on characters on the bag films; S3: collected image analysis; when the images are unqualified, the corresponding unqualified soft bags are removed or are not filled. The invention also discloses a visual inspection system which includes an image collection assembly and an inspection assembly, wherein each time the film drawing assembly translates L, the inspection assembly ends an inspection signal to the image collection assembly so as to collect images of the characters on the bag films. The visual inspection method and system of the characters on the bag making line and the bag making line have the advantages of improving the image collection accuracy.