The invention provides a waterproof roll paver and a paving method, belongs to the technical field of waterproof rolls, and can solve the problems of easy pollution and easy fall of overlap edges of traditional wet paved rolls. The waterproof roll paver comprises a support device for supporting and sending out the waterproof rolls, a guide device for tensioning the waterproof rolls sent out from the support device, a driving device for towing the waterproof rolls guided out from the guide device to pave on a basal surface and driving the paver to move, and a pressing device for compacting the paved waterproof rolls. The waterproof roll paver can enable the overlap widths of the overlap edges of the waterproof rolls to be consistent, is free of leaking points, fall and pollution on the overlap edges, can realize continuous paving, can save the labor, improves the working efficiency, and greatly enhances the waterproof quality. The waterproof roll paver is suitable for paving various waterproof rolls, and specifically for wetly paving asphalt rolls.