composite stiffened panels have considerable post-bucking potential capacity load that can substantially increase loading efficiency in aircraft design. In this paper, review on the EU research of design and analysis of stiffened composite panels including post-buckling are recommended. The relevant literatures are reviewed from the aspects of background, objectives, work packages, achievements, and analysis methods of projects. Finally, the trend of future fiber composite panel is introduced and the enlightenment of what these researches bring to us is also summarized.