The invention relates to a coil package material automatic following device, which comprises a coiled material disc, a first tension roll, a first proximity switch, a first guide roll, a second guide roll, a to-be-coiled material disc, a second tension roll, a second proximity switch, a third guide roll, a fourth guide roll, a sheet replacement clamping roll and a traction roll, wherein the first proximity switch is arranged near the first tension roll, the second proximity switch is arranged near the second tension roll, a first brake device is arranged at the first tension roll, and is connected with the first proximity switch by a signal, and a second brake device is arranged at the second tension roll, and is connected with the second proximity switch by a signal. By adopting the structure, the coil package material automatic following device has the advantages that the structure is simple and reasonable, the automatic following of sheets is realized, the number of shutdown times of a packaging machine is reduced, the sheet replacement auxiliary time is saved, and the production efficiency of the packaging machine is improved.