Based on the application scenarios of big data on medicine and medical services，the report from medicine-taking behavior analysis and medical quality evaluation systematically expounds the problems of big data on the relationship between drug research and development，adverse drug reactions and doctor prescriptions，also experience on medical service improvements and evaluation.The report analyzes the core problems of the application of medical big data in China from the perspectives of medical data sources，technical talent reserves and development models，and helps to understand the development status of big data in the pharmaceutical industry and the more personalized development in the future.