The invention relates to the comprehensive emergency management technical field, particularly to a weather forecast based intelligent plan treatment system and method. The weather forecast based intelligent plan treatment system is divided into an application layer, an application support layer, a data layer and a basic support layer. The weather forecast based intelligent plan treatment method mainly comprises two portions of weather forecast data processing and weather research and reasoning, wherein the weather forecast data processing is the condition of the weather research and reasoning and the weather research and reasoning is generated through an attribute reasoning module according to specific action rules of the treatment. According to the weather forecast based intelligent plan treatment system and method, the problems that the mass artificial judgment is complex, the reaction is slow, and the efficiency is low during treatment of various climates are solved and the weather forecast based intelligent plan treatment method can be applied to the weather forecast based intelligent plan treatment system.