Abstract: The multi-source precipitation products take the advantages of every single source precipitation data, and they have been applied in many respects such as weather and climate monitoring, climate change research, model evaluation, and hydrological prediction. For those applications, there are many prevailing products. CMA/NMIC also developed many multisource precipitation merging techniques and products, such as the high resolution radar-satellite-gauge merged precipitations based on the “PDF (Probability Density Function) + BMA (Bayesian Model Averaging) + OI (Optimal Interpolation)” and downscaling technique, the East-Asia multi-satellite integrated precipitation (EMSIP) using IR moving vector extrapolating technique, the hourly/0.01° merged forcing data for the high-resolution CMA land data assimilation system (HRCLDASv1.0)using STMAS (Space Time Multiscale Analysis System) technique, and a global merged precipitation based on the advanced satellite-retrial precipitation and merging algorithm, in research of CRA-Land reanalysis. At present, the operational CMA multisource precipitation analysis system (CMPAS-Hourly V2.1) was constructed to produce the real-time high-resolution and highquality merged precipitation, and well applied in GRAPES model evaluation. In future, the merging algorithm optimization, the minute precipitation products development, and ML (Machine Learning) technique application will be conducted.