Starting with the analysis of the effect caused by Wenchuan earthquake,this paper states the importance and main problems of comprehensive urban disaster prevention planning in China.

Urban Comprehensive Disaster Prevention Plan in America and Its Enlightenment;

By different agencies of developing plan, urban comprehensive disaster prevention plans are classified as one inside urban planning system or one outside system.

Planning for urban green space system and establishing a calamity-prevention city with flexible structure;

We should realize that the research of urban disaster-prevention should not only focus on re-verifying and drawing new building disaster-prevention standards,but also on the limitation of urban space planning,the relation between distribution of different urban function system and disaster environment.

As the improvement of urbanization, complication of urban function, expanding of population, disorder of eco-balance, slow developing of traffic infrastructure, natural and artificial intrusion for city made urban disaster-prevention (especially in .

On the other hand, our urban disaster-prevention space system planning is separated in several mono-disaster prevention planning.