The spatial evolution of the plasma emission spectra in the wavelength range of 490~600 nm during pulsed fiber laser dressing of bronze-bonded diamond grinding wheel under different laser conditions are studied. Under the assumption of local thermodynamic equilibrium, the electron temperature is determined from the Boltzmann plot method whereas the electron number density is calculated from the Stark broadened profiles according to the experimentally observed line profiles of neutral copper. Besides, the variations of the electron temperature and the electron number density as a function of the single-pulse laser energy at different distances along the direction of propagation of the plasma are studied. The results show that the electron temperature and density take on the Lorentz distribution as the distances increases, and they increase exponentially as the single-pulse laser energy increases. In addition, the behavior of the inverse bremsstrahlung absorption coefficient with the detecting distance and the single-pulse laser energy is also discussed.