Abstract: Taking Liaodong Bay in Liaoning province as an example, large scale survey data of living marine resources were collected in 2007, 2008 and 2011, and small sacle data from 128 construction projiects during 2007~2010. Baesd on GIS functions of spatial interpolation and spatial analyst and expert evaluation method, the paper combines large scale data in Liaodong Bay with small scale data from construction projiects, realizes data standardization for damage assessment of living marine resources. The results show that the method incarnates more scientific, practicability and maneuverability of damage assessment of living marine resources for construction projiect, it has important application significance, and is a beneficial exploration for marine ecological compensation.