The mesoscale characteristics of heavy rainfall events over the northern Fujian Province are studied by using of the hourly precipitation of 49 heavy rainfall events on 129 heavy rain days in flood senson at 10 stations of Nanping, Fujiang Province from 1980 to 2005. The spatial and temporal distribution, moving features, precipitation processes, influencing systems of rain clusters and severe rain clusters on heavy rain days in flood season, and topographic effect are analyzed. Some features and movement regularities of mesoscale precipitation systems in Nanping are described. The result is useful to forecasters.