Abstract:Test Data and its data format conversion are an important aspect of computer test and control area, also to servo test area. There are so many servo types and so many test data intertype differences that the data format conversion is needed. Some servo test software selects the test and data processing separate frame structure, data processing subsystem uses the mature application data platform, test subsystem is redesigned. The two subsystems have different low data formats, the test subsystem has a special data format conversion module. But now it has low efficiency on data format conversion, and can’t satisfy servo type needs for quickly justifying data to confirm servo products status. Research on the original data type, the final physical data format, and the data conversion logic, propose a new method on optimizing code memory usage efficiency, design a new conversion algorithm, thus has greatly improved the efficiency of converting works. And a new visual data format conversion tool has been designed and used in other servo types. The method has the common meaning ,so analogous problems can be solved like it.