The emergent seismic information service system plays a crucial role in the five major technical systems of the National Seismic Intensity Fast-Early-Warning Project. It also serves as an essential link and the final outlet for the emergent seismic information for public release. Leveraging a distributed service architecture development platform,the Sichuan Earthquake Agency integrated message queuing telemetry transport and various other techniques with JAVA to independently develop and designed the system for emergent seismic information service software. Currently,this system has been integrated into the core business system of emergent seismic information release in the National Seismic Intensity Fast-Early-Warning Project and has also been deployed and utilized throughout China. Consequently,potential risks associated with the single system operation of the current emergent seismic information release have been mitigated. With this system,the stability,safety and timeliness of information release will be significantly enhanced.