In the paper, the experimental study of grinding process of 2024Al/SiCp composites with the electroplated diamond wheel was conducted. The results indicate that the surface roughness of the workpiece is between 0.554 μm and 1.2 μm. Increment of the spindle speed, reduction of the cut depth and decrease of the feed speed make the surface roughness value reduce. After grinding, compressive stresses on the machined surface can be obtained. During grinding, the normal grinding force is greater than the tangent force and the grinding forces increase as the increase of the feed speed and depth of cut.