The invention discloses an automatic material collecting control device for a slitting machine. The automatic material collecting device comprises a center controller, a material coiling mechanism, a guiding plate and a slitting tool. The material coiling mechanism comprises a support, multiple material collecting shafts arranged on the support in parallel, a drive device, a rotating device and a switching device. The periphery of each material collecting shaft is sleeved with a material collecting coil. The outer surface of each material collecting coil is coated with glue. The lower end of the guiding plate faces the material collecting coil located at the topmost end. The two ends of each material collecting shaft are provided with detachable dead bolts. Each material collecting shaft is provided with an induction device used for inducing the thickness of a film material. The slitting tool is located at the front end of the guiding plate and is fixedly connected with a control device which is used for driving the slitting tool to move. The drive device, the induction device, the rotating device, the switching device and the control device are connected with the center controller. According to the technical scheme, automatic material collecting can be achieved, the material collecting coils can be replaced without shutdown, labor and cost are saved, and the production efficiency is improved as well.