The invention discloses a data synchronism system of a patent individuation index. A layer of local patent resource server (SC side) is added between traditional patent services B/S, client side (C side) services are provided for a patent data resource library server (S side) in an original C/S mode, patent data resource library server (S side) services are provided for a browser (B side) in an original B/S mode, network flow is effectively reduced, and meanwhile the offline access and analysis functions of patent data are provided. In addition, a user can build individuation space relevant to the field by creating the individuation index, and it can be guaranteed that newest patent information is acquired by the individuation space in time based on real-time data pushing services of the patent data resource library server (S side), and a uniform data access form can be achieved.