The sintered permanent magnets of (PrNd)33Al0.7Nb0.6Cu0.1B1.05Febal (wt%) were prepared by the high pressure and conventional molding processes. The performances and microstructure were discussed by metalloscope, VSM, SEM and so on. The results show that the Hcj and (BH)max of the samples by high pressure process (1.8 and 3.6 GPa) are much higher (133 kA·m-1 and 0.6 kJ·m-3; 120.3 kA·m-1 and 3.2 kJ·m-3) than those by the conventional pressure process. On the other hand, the former crystalline grains of NdFeB phase are thin and small. In addition, the former Nd-rich phases are homogeneous and reasonable, but too high pressure will decrease Vickers hardness of samples