Environmental monitoring and early-warning system should be built to enhance the capacity of environmental monitor and management. Risk knowledge, monitoring and early-warning service, dissemination and communication, and response capacity are functional modules to achieve the management object. When constructing a regional environmental monitor and early-warning system, institution for monitor and management, laws and regulations, equipments, persons with ability, information system, consultation capacity and service system for public participation should be contained to build the monitor and early system.