The Indian Ocean Tsunami disaster occurred on December 26 in 2004. This paper introduces the method and the result for monitoring and assessing this Tsunami disaster by the usage of new generation Moderate Resolution data from the British Disaster Monitoring Constellation（DMC）. The multi-spectrum bands resolution is 32 meter. This work takes Aceh province of Indonesia as a case study. By pre-processing of DMC image

the analysis of the spectrum information for damaged ground objects

the contrast analysis of the interesting areas and their environment background information

the interpretation keys for each loss degree in grade has been established. Through interpreting DMC image

the boundary of all the damaged objects was elelineated according to the loss extent

then statistics and analysis were made for the tsunami disaster extent of disaster losses. Fast and macroscopic is its characteristic. The results of this paper show that the method is feasibly. It provides the objective and referenced information for the assistance of Chinese government. Moreover

it will provide the methodology for other disasters

and the application supports for the application of coming Disaster and Environment Forecast Constellation and Chinese DMC.