A roller press utilized in a roller press machine comprises a main shaft (1) and a shaft cover (2) sleeving the main shaft. Wear-resistant pressing blocks (3) are symmetrically disposed on an outer surface of the annular shaft cover. The wear-resistant pressing blocks are arranged in strips, and arranged closely and in parallel on the outer surface of the shaft cover. A wedge-shaped protrusion (4) is arranged below each of the wear-resistant pressing blocks. A wedge-shaped recess (5) is disposed at a location corresponding to the shaft cover and matches the shape of the shaft cover. In the embodiment, the detachable wear-resistant pressing blocks are disposed at the outer side of the shaft cover of the roller press, after worn out, the wear-resistant pressing blocks are easy to replace and maintain without replacing the entire shaft cover, increasing efficiency while reducing maintenance costs, extending a service life of the apparatus.