Abstract: 【Purpose/significance】A comparative analysis of the international patent R&D trend of arithmetic was conducted to pro⁃vide reference for the international cooperation and development model of arithmetic in China.【Method/process】Using PC-Value and density function of pixel points, we construct the process model of topic mapping for arithmetic patent analysis. Taking the patent data from 2011-2020 as the research object, multi-dimensional patent analysis and text mining were conducted on the application trends, national economic industries, countries, institutions, research hotspots and theme evolution of arithmetic【. Result/conclusion】The sub⁃ject of arithmetic is currently in the formative stage, and R&D focuses on technologies such as electrical digital data processing of com⁃puter systems and transmission of digital information; China, the United States, and Japan are the main R&D countries, IBM Interna⁃
tional Business Machines Corporation and Amazon Technology Resources Ltd. in the United States, Huawei Technologies Co. and Bei⁃jing Bitmain Technology Co. in China; servers, computers are the key research objects , controllers, processors, sensors subject terms for emerging hot spots of concern. It is suggested that China's arithmetic technology adopts the international cooperation and develop⁃ment model of cross-fertilization of disciplines, integration of industry, academia and research, and synergization of diversity【. Innova⁃tion/limitation】Construction of subject maps and data analysis of international arithmetic patent information, and suggestions for its de⁃velopment countermeasures in China.