Abstract: The results of the numerical simulations in Volcano-climate research are synthetically summarized. These simulation results show that the climate change in recent hundred to thousand years is closely related to the volcanism. The large volcano eruption would produce stratospheric warming by 4℃, yearly global-averaged surface cooling by 0.4℃, and monthly about 1℃, respectively. The spatial-temporal characteristics of the temperature drop connect with many factors, such as the eruption features (including latitude location, season, intensity of eruption and so on), the thermodynamic difference between land and sea, the optical properties of the stratospheric aerosols, the change of the meridional latent heat transport caused by the direct radiative forcing, and so on. The research findings concerning Mount Pinatubo eruption in 1991 and its potential climate impact are reviewed.