Abstract: The data of minute and hour precipitation are the basic data to research the feature of heavy precipitation weather process. During the period from September. 2016 to November. 2017, the history of precipitation recording paper trace and rainfall data extraction was identified, and the precipitation minute data sets of weather stations in China were formed. It involves more than 2040 weather stations in China mainland and the data history spans for more than 50 years. In order to ensure the quality of the data sets, the key to control the quality of the precipitation trace and data extraction is the checking work. This article introduces the technology and process how to use the regulations of the precipitation recording paper, the quality checking program, the evaluation software to extract the trace of precipitation and its information. For comparing the period precipitation recording data with the observations, we also discuss those evaluated results of using the accumulative rainfall in that rainfall process to instead of the extraction of the hourly rainfall data, the right methods to deal with abnormal precipitation trace across timing observation and the right methods to correct the improper treatments by the observers in history.