The invention discloses an adjusting device, comprising a first adjusting assembly and a second adjusting assembly; wherein the first adjusting assembly and the second adjusting assembly all comprises a guide roller, a first rotating disk, a second rotating disk, a first fixed block and a second fixed block; wherein the two ends of the guide roller are respectively fixedly connected at the surfaces of the first rotating disk and the second rotating disk, an included angle is kept between the guide roller and the center line of the first rotating disk and the second rotating disk, the first rotating disk and the second rotating disk are arranged in the holes of the first fixed block and the second fixed block through screw thread connection, and the first rotating disk and the second rotating disk can rotate in the first fixed block and the second fixed block. The adjusting device provided by the embodiment of the invention realizes correction on articles advancing on the guide roller and prevents the articles from deviation in advancing process.