The operating system changing from Win7 into the 64 bit system has lead the VB operation interface to be not smooth, and the commands and functions cannot work properly. Fortunately, the database connection tool ADO is still normal. However, operating system, database version, linking library version and database information will have an impact on the data. And there are differences between the theoretical analysis and the actual situation of the tutorial. This paper mainly analyzes the practical problems encountered in programming and its solutions.