The invention relates to a device and method for adjusting the crepe ratio of toilet paper, in particular to a manual-automatic integrated device and method for adjusting the crepe ratio of toilet paper. The device comprises a PLC (Programmable logic Controller), a site operation screen, a speed adjusting device, a drying cylinder and a reeling cylinder, wherein the PLC is connected with the speed adjusting device and the site operation screen; the drying cylinder is arranged on one side of the reeling cylinder; the drying cylinder and the reeling cylinder are connected with the speed adjusting device. According to the invention, the crepe ratio is adjusted automatically, so that the reeling cylinder performs reeling at variable speeds within a tool changing period so as to eliminate the instability of the crepe ratio caused by the abrasion of a creping scraper, thereby guaranteeing the consistent crepe ratio of raw paper and realizing the stability of the bulk and softness of toilet paper rolls eventually.