The utility model relates to an anti-deviating device for paper on covering paper. The device comprises a locating circular ring, two taper sleeves, a paper roll, bolts, a support, a paper shaft, a fixture and an installation base, wherein the locating circular ring is fixed on one side of the paper roll; one taper sleeve is arranged between the locating circular ring and the paper roll; the fixture is fixed on the other side of the paper shaft; the other taper sleeve is arranged between the fixture and the paper roll; the paper shaft is arranged on the support in a rolling way; the support is fixed on the installation base. Due to the arranging and fixing manner of the taper sleeves, the paper roll cannot be loosened easily, and the deviation problem of the covering paper is solved from the source.