Focused on the comprehensive, efficient, and convenient management of numerical weather prediction operation, a variety of monitoring systems of the national and regional centers are integrated，on the basis of NMIC_SMS，to build a unitary monitoring platform for numerical weather prediction operation, which is designed with the B/S multi layer structure, developed by Java, JSP and Oracle technology. It can achieve such functions as hierarchical monitoring, statistical query, and short message warning. Experiments are conducted on various models of the Numerical Weather Prediction Center, Liaoning and Sichuan regional centers, as well as the high performance computer systems of the National Meteorological Administration. The platform has completed comprehensive testing and works stably. The application of the platform can discover faults without delay， shorten processing， thus to ensure the stable running of the numerical weather forecast system.