Firstly,besides non-engineering factors five factors affecting seismic losses are presented.They are seismic hazard analysis ability,ability on earthquake monitoring and prediction,seismic ability on cities' politics,economy and population,seismic ability on non-engineering reducing disaster and ability on earthquake hazard mitigation and rescue.Then the index system on non-engineering factors is set up.Finally,the evaluation method about how to define the effect of non-engineering factors to city's earthquake disaster loss is given.