Abstract: The accurate meteorological observational information could be obtained only through the good meteorological observational environment. The increasing of urban building areas and the field for urban construction caused by the urbanization made the meteorological observing environment destroyed frequently, and its effects on accuracy, representation and comparison of meteorological observational data were serious. Thus, it should be paid more attention to. The historical evolution and the legal basis for protecting the meteorological exploring environment were reviewed, and the current situation was analyzed by using a case study. According to the statistical data, the height of buildings around the meteorological observational sites exceeds the standard height from the law of “protection method of meteorological observational environment and equipment”, which was the main reason destroying the meteorological observational environment. The sources of reasons could be attributed to two parts, i.e. inside one and outside one. The real estate construction was rapidly expanding because of the rapid development of economy and society and the interests of the local government, and these were the outside reason. On the other hand, the construction standard of office building and the new station selection model in the meteorological departments made the selection of the new station location difficult and also made weather station moved frequently, and these were the inside reason. Some specific measurements protecting meteorological observational environment were proposed as follows: scientificity and preciseness of meteorological observational environment protection standard should be established in the meteorological department, and the protection mechanism based on classification of meteorological observational environment should be set up; protecting the meteorological observational environment by the corresponding law and adequate administrative intervention should be used; go with the trend of national socio-economic development and handle comprehensively problems of the meteorological observational environment protection; For the station that must be moved, the meteorological observational environment protection should be the first as selecting new station locations. At the same time, the various patterns may be used to the construction layout of a new station.

Key words: Observational environment, Protective situation, Protection measurements