The invention discloses a relative novelty judgement method. The method is characterized by comprising the following steps of: inputting a to-be-applied technical scheme; providing a database module,wherein the database module is used for obtaining patent information of carious countries in the world; analyzing the to-be-applied technical scheme and extracting all the keywords of the to-be-applied technical scheme; carrying out retrieval in the database module according to all the keywords so as to find a related patent of the to-be-applied technical scheme; judging whether the to-be-appliedscheme has relative novelty for the related patent or not according to a relative novelty judgement rule; and outputting an application suggestion report of the to-be-applied technical scheme according to the judgement result. The method has the beneficial effect of rapidly and correctly judging whether technical schemes have relatieve novelty.