Abstract:In order to make use of AMDAR data better, a feasible observation data quality c ontrol module should be designed to make sure AMDAR data used in the meteorologi cal research and operation with a higher quality. The AMDAR QC module is brought forward consulting the characteristics of AMDAR. Many quality control tech niques are integrated into the QC module, such as the station extreme value check， the interior consistency check, the consistence ch eck w ith the first guess, the temporal consistency check, the space consistency check , th e decision making algorithm, the statistic and feedback technique. The AMDA R data quality control module has been applied into AMDAR data in August of 2007 . Subjective verification result shows that error information in the observation can be distinguished effectively from the AMDAR data.