Abstract: The distribution of the cutting edges on the surface of grinding wheel has influence on the surface feature of ground workpiece in grinding process. Using numerical and experimental methods, the dressing and grinding processes were investigated. This approach revealed the effect of single-point diamond wear and dressing parameters on the surface morphology of ground workpiece. The influence of workpiece morphology caused by dressing parameters and wear of dressing tool was discussed under a overlap ratio of 3. It is found that a regular pattern for the valleys and peaks on the workpiece surface at a period of 0.12 mm was found in dressing feed. This regular feature is weakened as the wear of dressing tool increased and surface roughness decreased from 0.52 μm to 0.38 μm. Grinding burn occurred. However, surface roughness increased to 0.81μm through adjusting dressing parameters to keep the initial overlap ratio for the given conditions.