Based on the hourly precipitation data of 75 dense observations from automatic weather stations in Liuzhou from 2010 to 2019, the spatio-temporal characteristics of short-time heavy rainfall are investigated. The results indicate that, short-time heavy rainfall happens most frequently in Rongan and Rongshui and northern Luzhai. The windward slopes of the mountains and the trumpet-shaped topography are more conducive to the appearance of short-time heavy rainfall. Short-time heavy rainfall activity reaches high occurrence in May and June, followed by July and August. The diurnal variation of short-time heavy rainfall shows a single-peak distribution, which mainly appears at night and the morning.There are significant differences in the spatio-temporal distribution characteristics of short-time heavy rainfall in this area, which are related to the influence of the system, the convergence and uplift of the topography, and the differences in local thermal conditions.