A series of serious corrosion questions were researched combines corrosion problem in the major axles of the tail horizontal wing on typical plane in this paper systematically, which include the main reason and mechanism for the corrosion occurrence in the tube inner structure on typical plane, accelerated corrosion test methods, probabilistic distribution and development of corrosion, corrosion influence on fatigue life and the evaluation method of corrosion damage tolerance, etc. And several innov...