The invention discloses a back adhesive coating and dispensing pool for a printing machine. The back adhesive coating and dispensing pool comprises a machine frame, an adhesive pool is arranged at theinner bottom of the machine frame, an adhesive coating and dispensing roller is arranged inside the adhesive pool, a hydraulic cylinder is arranged at the top of the machine frame, a piston rod is arranged at the lower portion of the hydraulic cylinder, a lifting frame is arranged at the lower end of the piston rod, a first installation portion is arranged on one side of the lifting frame, the two sides of the lower portion of the first installation portion are provided with first positioning cylinders, a driven roller is arranged between the first positioning cylinders in a sleeving mode, asecond installation portion is arranged on the other side of the lifting frame, second positioning cylinders are arranged on the two sides of the lower portion of the second installation portion, a driving roller is arranged between the second positioning cylinders in a sleeving mode, the driving roller corresponds to the driven roller, the adhesive coating and dispensing roller comprises an adhesive coating and dispensing roller main body, and a plurality of adhesive coating and dispensing convex portions are arranged on the outer peripheral surface of the adhesive coating and dispensing roller main body. According to the back adhesive coating and dispensing pool for the printing machine, paper can be attached to the surface of the adhesive coating and dispensing roller, the adhesive coating and dispensing roller can conveniently perform adhesive coating and dispensing treatment on the paper through the adhesive coating and dispensing convex portions, so that the adhesive coating anddispensing treatment efficiency is greatly improved.