The advancement in the researches on the influence of volcanic eruptions on climate and the main conclusions and progress obtained from statistical analysis and numerical simulation is summarized. Present studies show that major eruptions can produce a decrease in surface air temperature. Due to the seasonal difference of volcanic activities, latitude and intensities, the spatial distribution and the effect on radiation vary. Consequently, the time and augmentation of temperature decrease are not consistent. The volcanic eruptions at the high latitudes mainly influence the same hemisphere, and those at low and middle latitudes influence the both hemispheres. The impact of volcanic eruptions is more obvious at the low latitudes than at the high latitudes, and more obvious in summer than in winter. The influence of volcanic eruptions on precipitation is relatively complex, and there is no consistent conclusion due to the weak volcanic signals in the precipitation series and the influence of other factors such as ENSO.