Tire pattern and heavy duty tire

The utility model discloses a tread pattern which comprises a tread, a middle reinforcing rib, a first pattern block, a second pattern block and a shoulder groove, and the middle reinforcing rib is arranged at the central axis of the tread; the first pattern blocks and the second pattern blocks are symmetrically arranged in a staggered manner along the central axis of the tread and are uniformly distributed in the circumferential direction of the tire; the starting ends of the first pattern blocks and the second pattern blocks are positioned on the middle reinforcing rib, and the tail ends of the first pattern blocks and the second pattern blocks extend to the outer end of the tread; the shoulder grooves are formed between the adjacent first pattern blocks and between the adjacent second pattern blocks; a first middle groove and a second middle groove are respectively formed in the upper end and the lower end between the first pattern block and the second pattern block; and the first middle groove, the second