Abstract: YB25 soft packer presented some package problems, as incomplete cigarette covering, badly folded foil, etc.By referring to the foil conveying in YB45 hard packet packer, the YB25 soft packer was equipped with a suction belt for foil conveying, the problem of foil's travelling deviation was well solved, the packet defects were reduced, and the adaptability of YB25 soft packer to the foil of different specifications was also improved.