Many problems exist in processing aircraft load spectrum data, such as tested data storage and analyzing, etc. To solve the above problems, a data visualization technique project is established based on VC++. Applications are divided into three-layer structure: the bottom data layer, the connecting language layer, the upper user layer. Pivotal techniques are brought forward in accordance with the structure model: the general data interface, virtual simulation technology, parallel computing. A prototype is developed and tested by some kinds of aircrafts load spectrum test projects, which had been used to fighter plane, transporter plane and attack plane. The practice has proved that the program made use of data visualization technique improves the data processing efficiency and provides auxiliary analysis tools for aircraft life determination and extension.