The invention discloses an adhesive tape regulating device of a laminating machine. The adhesive tape regulating device comprises parts such as a top part resistance-free roller, a side part resistance-free roller, a roller assembly transverse regulating device, a pressure roller, a cooling roller, a back support roller, a side plate and a beam. The adhesive tape regulating device can effectivelyisolate contact between a middle-layer material and the pressure roller, also can eliminate or slow down formation of bumps of the middle-layer material, reduces influences, on laminating effect, of the bumps, and meets the technological requirements of long-time continuous production.