Perovskite rare earth orthoferrites RFeO3 possesses abundant magnetism, which is due to the complex interaction between rare earth ions in 4f electron shell and iron ions in 3d electron shell. As an important phenomenon in RFeO3 system, magnetization jump means that the magnetic moments of rare earth ions and iron ions in the system rotate 180° under a specific temperature and applied magnetic field, and the macroscopic performance is that the magnetization changes abruptly in the magnetocaloric curve. In this paper, two kinds of magnetization jump phenomena of different compounds RFeO3 are discussed, the first type of magnetization transition usually has compensation points, and the coupling direction of FR and FFe is unchanged, while the second type of magnetization transition is opposite, and the temperature region of the two types of magnetization transition is regulated by the external magnetic field.