The invention provides a casing pipe groove cleaning and well cementation bump pressure rubber plug. The casing pipe groove cleaning and well cementation bump pressure rubber plug comprises rubber wings and a plug core. A plurality of the rubber wings are fixedly installed on the plug core in a manner of facing the same direction. At least one casing pipe brush is arranged between two adjacent rubber wings, the lower end of the casing pipe brush is fixedly connected with the rubber wing under the casing pipe brush, the upper end of the casing pipe brush is a free end and extends in the direction being far from the plug core, the free end of the casing pipe brush extends in each direction that the casing pipe brush can reach as much as possible between the two adjacent rubber wings, and therefore the cleaning area is increased, and the cleaning effect is better. According to the invention, on the basis of a traditional rubber plug, the casing pipe brush is added on the rubber wings, during the moving-down process of the rubber plug, the casing pipe brush on the rubber wings can scrape and brush residual cement mortar in a groove of a casing string, the casing pipe brush brushes away residual cement mortar in the groove, and the fact that a well completion tool enters the groove in a later period is guaranteed. In addition, an oil pipe in a workover process can be cleaned, and the decontamination effect is very substantial.