In prior period of research on theory of police emergency in China,researchists on police emergency repres-ented by scholars in Hubei university of police,established Science of Police Emergency Response,carried out expolor-atory researches on basic theory,courses,the specialized subject,discipline construction,personnel training mode,ect.

Command values in police emergency refers to the general ideas about the police emergency of leaders in public security organs when they command in police emergency,which is the leaders\' basic belief and ideal system about the police emergency commanding.

In prior period of research on theory of police emergency in China,researchists on police emergency repres-ented by scholars in Hubei university of police,established Science of Police Emergency Response,carried out expolor-atory researches on basic theory,courses,the specialized subject,discipline construction,personnel training mode,ect.

With the unceasing development and perfection of emergency organization,mechanism and legal con-struction,the police emergency in emergency events,such as training,meeting emergencies and being ready to go out on duty,disclosing information,and so on,has changed significantly.

Review of water source areas conservation and early warning system for emergent water pollution accidents;

Web Service/WebGIS-based Emergency Preparedness and Response of Sudden Environment Pollution Accident System Application;

Study on Design of Emergency Preparedness and Response System of Urban Pollution Source;

Through analyzing the dangerous of water source pollution,the paper brings forward the necessity of setting up an emergency preparedness and response system of pollution source based on Web GIS.