Hourly precipitation data of regional automatic weather stations (AWS) is very vital to meteorological operation in disaster alert, decisionmaking service, forecast validation, etc. Quality status of any data should be knowable before being used. Based on all the hourly precipitation data of regional AWS and national AWS in China from 2002 to 2009 and the characters of its error data, quality control procedures have been developed for real time and nonreal time hourly precipitation data from all of above AWS. In the end, it is presented the quality assessment results on real time hourly precipitation data of regional AWS and national AWS in China from 2006 to 2009 using the above quality control procedures.