Based on the characteristics of geographical prospecting data of hazards, this content discusses the design of the data-interpreting expert system for hazard, gives the calculation procedure of mechanism and the construction. In the process of design, constructing complete knowledge base and based on the production rule, vogue inference is realized. A combination is also made between inference process and interpretive mechanism, to increase the operation efficiency of the system, putting the system in better way for communication and interaction with the user. Research results show that this system can effectively integrate expert knowledge, reasonably configure data resource and enhance the reliability of interpretive achievement of hazardous data. A journal is a periodical publication intended to further progress of science, usually by reporting new research.