The invention provides a power grid device and facility information providing method and device to solve the problem of low information retrieval operation efficiency in fuzzy query in a power grid geographic information system (GIS). The method includes building a data index table according to word noun information of a power grid device and facility selected from the power grid GIS, extracting semantic key words from the data index table, building a reverse index table composed of the semantic key words, matching received key words in a retrieval input item and the key words in the reverse index table to obtain a retrieval result, and outputting the retrieval result. By means of the method, retrieval efficiency can be improved, and intelligent searching of power grid resources is further achieved.