Abstract: The issuance of early warning signals for meteorological disasters is the most important means for governments at all levels to prevent meteorological disasters. According to the actual needs of meteorological early warning signal evaluation business， the effectiveness evaluation system of meteorological disaster early warning signal in Hainan province is designed to strengthen the quality management of Hainan meteorological disaster early warning signal release in Hainan. The system design is based on object-oriented technical methods， and uses UML language to abstract describe the evaluation of early warning signals， so as to improve the level of system development and application. The system adopts C/S architecture， takes SQL server database as the support for managing massive meteorological data， and is developed and implemented in VS.NET C# language. The system can provide fast and convenient technical support for the early warning business management department and forecast and early warning release personnel， effectively improve the modernization level of meteorological business.

Key words: system development, effectiveness evaluation, early warning signal, meteorological disaster