The invention relates to an edge gathering mechanism. A product and edge gathering paper of the edge gathering product are ejected to the edge gathering mechanism by a jacking mechanism; pen-shaped air cylinders drive edge gathering mounting plates to move downwards to hold down the battery product and the edge gathering paper; the pen-shaped air cylinders and the jacking mechanism produce constant forces respectively; the constant force of the jacking mechanism is greater than the constant forces of the pen-shaped air cylinders to allow the product and the edge gathering paper to move upwards slowly; an edge gathering rubber strip a and an edge gathering rubber strip b can just allow the product to pass through to uplift the peripheral edge gathering paper; then, clamping jaw air cylinders drive edge gathering rods to move to allow the uplift paper on the front side and the rear side of the product to be clamped on a front flange face and a rear flange face of a battery; the edge gathering air cylinders drive the uplift paper on the left side of the product to be uplift on a left side flange face of the battery; after edge gathering is accomplished, the clamping jaw air cylinders and the edge gathering air cylinders retract; the jacking mechanism retracts; the product after the edge gathering retracts to an initial position; and then a next edge gathering procedure is carried out.