The present invention discloses a back glue sticking device for camera production and a working method thereof, comprising a fixed base and a fixed top plate, wherein the fixed top plate is fixedly mounted on the upper part of the fixed base, and the fixed base and the fixed top plate are butt-jointed and fixed by four groups of supporting columns, a pull-out bottom plate is movably sleeved on the inner side of the fixed base, and a fixed base plate for mounting a camera is spliced and mounted on the pull-out bottom plate, a pressing plate for squeezing the back glue of the camera is movably mounted below the fixed top plate, a movable scraper for separating the back glue is movably mounted on the bottom of the pressing plate, and an inclined scraper head is fixedly mounted on the outer surface of the side edge of the movable scraper; by arranging the pull-out bottom plate and the fixed base plate, the back glue sticking device for camera production can complete the back glue fixing operations of several groups of cameras at one time, thereby improving work efficiency, and by utilizing the movable scraper bar and the rolling part, the pasting and fixing operations of the multiple groups of back glue can be optimized, thereby improving the pasting effect.