This paper gets 51007 mapping samples on the elderly above 65 years old in Taipei, which comes from the data integration of Taiwan's National Health Insurance Research Database and the database of Annual Physical Examination Program for the Elderly in Taipei. From the point view of gender, district, marital status and educational background, it is statistically insignificant for the difference between mapping samples and Taipei's official statistics. This kind of data integration may offer some new direction for value-added Database in the age of Big Data.