In recent years

the green tide caused by enteromorpha prolifera bloom with fast growth rates became one of the ecological disasters. In the monitoring of Qingdao enteromorpha prolifera bloom disaster using remote sensing technology

the Multi-mode Airborne Digital Camera （MADC） system played an important role in the algae reducing planning. It provided the data source for the quick extraction of enteromorpha prolifera information. The enteromorpha prolifera monitoring results

such as the distribution

area and density

were provided to the government in time for decision. In this paper

the components and characters of MADC system are introduced

and the quick extraction technology and work flow are set up based on the analysis of the spectral and image features. The key technologies in the data process and information extraction are studied and the final remote sensing monitoring results are introduced. The feasibility of prospect application in marine disaster monitoring such as the red ride monitoring of MADC system and advices for the improvement of MADC are introduced at last. The information ex- traction method will play an important role in the marine environment monitoring especially in the contingency environment disaster monitoring.