Coral reef bleaching, the ecological phenomenon of whitening of reefs, result from the loss of symbiotic zooxanthellae and /or a reduction in photosynthetic pigment concentrations in zooxanthellae residing within the gastrodermal tissues of host animals, and death of coral reef could be caused by serious bleaching. Evidences show that high sea surface temperature (SST) have close relationship with coral reef bleaching. Remote sensing technology can provide SST and ocean color data with large coverage in both space and time, and SST data can be applied in monitoring and forecasting coral bleaching. Based on Advanced Very High Resolution Radiometer (AVHRR), National Oceanic and Atmospheric Administration (NOAA) has developed some remote sensing techniques and products to monitor global coral bleaching, HotSpot and DHW are two most important products among them. Research on coral bleaching in China is behindhand in the world,that calls more intensive studies on coral bleaching using satellite remote sensing.