Document number generation method and related device

The invention provides a document number generation method. The method comprises the following steps: receiving a document number generation request of a target legal document sent by a user; determining a template of the document number according to the document number generation request, one or more to-be-filled content items existing in the template; determining target content of the to-be-filled content items according to the extraction rules of the one or more to-be-filled content items; and filling the target content into the corresponding to-be-filled content item to generate a documentnumber. Visibly, the document number template is constructed in advance, the extraction rule of each to-be-filled content item in the document number template is preset, the document number content can be obtained by automatically executing the extraction rule, and the specific document number can be automatically generated by filling the document number template with the document number content;the method for generating