The purpose of the study was to reduce the losses caused by flood and to prevent them in advance

by taking Laoshan District

Qingdao City as an object.Based on GIS components and the spatial analysis of GIS

we designed an evaluation model to develop flood risk evaluation system for Laoshan District

using factor set

judgment set

membership function

and weight set established by the method of fuzzy comprehensive evaluation.The system can produce assessment results automatically after user enters data

which is classed into high grade

slightly high grade

medium grade

slightly low grade

and low grade.The results obtained by the rating system are most in common with the actual results.Especially

Wanggezhuang street is in the highest grade in the area.With good flexibility and performance

the method of the system can be popularized to general crisis evaluation judge.