Method and device for extracting key information of electronic document

The invention discloses a method and a device for extracting key information of an electronic document. The method comprises the following steps of: obtaining an electronic document of key informationto be extracted; when the extraction model corresponding to the electronic document does not exist, entering a model building process, obtaining a key feature labeled by a user, extracting at least one attribute of a table in the electronic document, constructing an extraction model based on the key feature and the at least one attribute of the table, obtaining a newly-built key field name of theuser and at least one extraction strategy corresponding to the key field name, and configuring the newly-built key field name and the at least one extraction strategy into the extraction model; and obtaining a first instruction of a user, and storing the model based on the first instruction. Through the method provided by the invention, the content of the specified key field in the electronic document can be accurately and quickly extracted by designing and configuring the extraction parameters without redeveloping an extraction program, so that the structured storage of the unstructured electronic document is realized, and the processing capacity of equipment is saved to the greatest extent.