Abstract: Chilling damage is one of the main types of China’s low-temperature disasters which particularly happens in the northeast and causes very serious impact. Because of this, the author provides a web-based remote diagnosis and management system platform for maize chilling damage. Through investigating the key technologies of the remote diagnosis and management system，a web-based management system was presented on the basis of collecting and processing the experience and knowledge related to maize chilling damage in northeast China. For the computer program, this system was developed by J2EE and Java. Combined with analysis of the environmental data acquired from the wireless telemonitoring system setting up in the field, the real-time forecast of maize chilling damage may be made out just through the Internet. By logging in this system, users can get the following services: choosing active and passive countermeasures for reducing maize chilling damage, making real-time management, getting reference of experts’ knowledge and executing system administration, etc. Besides reliability, easy maintenance and operation, the system also has wide applicability that could provide an universal system platform of remote diagnosis and management for more crops meteorological disasters by rebuilding the data-base and knowledge base.