[Objective] The accuracies of GPM and TRMM precipitation data were measured to evaluate the applicability of TRMM and GPM data in the Haihe River basin. [Methods] The precipitation products from April to October 2014 in the Haihe River basin were compared with the corresponding data measured with rain gauges from 35 meteorological stations. the coefficient of determination R² and relative error BIAS were used as statistical indicators to evaluate the performance of GPM(global precipitation measurement) and TRMM (tropical rainfall measuring mission). [Results] GPM performed slightly better than TRMM did. The coefficient of determination R² between satellite precipitation product and in-situ data were 0.758 2 and 0.760 7 for TRMM and GPM, the slope K were 0.810 5 and 0.833 5, respectively. Although the difference between TRMM and GPM was minor and both of them underestimated the real precipitation, accuracies of them still were relative high. [Conclusion] GPM IMERG precipitation product has potentially good application prospect in monthly scale hydrology for its high spatial resolution.