Based on the current situation and development plan of marine meteorological observation, it is recognized that there is a need to develop appropriate data assimilation technology for enhancing the efficiency of data utilization. Only in that way, there is a chance to overcome the lack of observation, and to improve numerical weather prediction. In this paper, the multi scale/block batch wise data assimilation is suggested to perform the test of tropical cyclone data assimilation. The results show: the multi scale/block batch wise data assimilation can be appropriate for the data assimilation of tropical cyclone multi scale circulation, satisfy with the flow dependent background error covariance required by tropical cyclone data assimilation, also can use effectively the marine meteorological observation. By means of the multi scale/block batch wise data assimilation, to amplify the utilization of marine meteorological observation, it is an effective approach to obtain high quality tropical cyclone initial circulation.