In this paper, non-typhoon heavy rain research in Taiwan for the past 30 years is reviewed. Since 1987 TAMEX experiment, Taiwan heavy rain research and forecast operation have been experienced a significant change, i.e., from qualitative description transfer into quantitative analysis and simulation. Many new measurement instrumentations and numerical weather prediction systems have been installed. Due to great challenge caused by climate change and frequent occurrence of extreme weather events, in order to provide timely information for emergency response and disaster risk reduction, technology development on quantitative precipitation forecast (QPF) has become world-wide common requirements. In this paper, efforts from Taiwan meteorology community to strengthen the knowledge of basic understanding of heavy rainfall events and to improve the forecast capability are reviewed.