An interactive assimilation /retrieval/forecaste circle system d eveloped through a joint NSMC/NMC research to improve the accuracy of the satellite retrievals and their usage in operational NWP is introduced. Firstly,the basic principle of the interactive system,the introduction of the analysis/forecast model and the scheme of satellite retrieval are given. Secondly,the primary results are reported. It can be seen that the interactive circle system is likely to improve the quality of satellite data and make them a useful NWP data source for NWC.