This paper has designed a unified storage model of Automatic Weather Station Quality Information Inquiries and Feedback (AWSQIF), and has developed an AWSQIF automatic management system, which implements the storage of AWSQIF automatically in national quality information two-way feedback process. Based on the unified storage, AWSQIF data have important application in real-time data management, data quality assessment and quality control effect analysis. The results show that the data quality has been improved significantly, and the data assessment has achieved online operating. In addition, AWSQIF can assist the improvement of the quality control effect.