A multicolor lithographic rotary press comprises a plurality of printing sections arranged along a traveling line of paper web, a plurality of register adjusting means, a paper stretching means and a plurality of width adjusting means. Each of the printing sections further includes at least one of divided plate cylinder each divided section of which is independently moved in the axial direction and/or the circumferential direction. The paper stretching means is arranged at the downstream of the printing sections to apply a stretching force to the paper web. The width adjusting means is arranged between two sets of the printing sections to apply an adjusting force to the paper web. The register adjusting means is mechanically connected to each of the divided plate cylinders in the printing sections, and includes an adjusting mechanism for actuating the divided sections in response to a control unit connected to a sensor for detecting the lines and images printed on the paper web by each of the printing sections.