Tire drainage groove

The utility model relates to the technical field of tires, and discloses a tire drainage groove which comprises a tire body, two parallel main drainage grooves are formed in the wall face of the tire body, and a connecting groove and an edge groove which are communicated with the main drainage grooves are further formed in the wall face of the tire body. An intersection channel is formed in the wall face of the tire body to make up a gap between the two main drainage grooves, a guide groove is formed between every two adjacent connecting grooves to share drainage in the main drainage grooves, and a first backpressure groove and a crossed groove which are crossed in an X shape intersect with the two main drainage grooves correspondingly. Part of rainwater enters the connecting groove and the edge groove to be drained to the side of the tire body, part of rainwater impacts the inner side wall face in the main drainage groove, ports of the first back pressure groove and the cross groove are staggered with ports