《亚鲁王》和《贝奥武甫》同为不同民族的重要英雄史诗。征战母题是所有英雄史诗的一个重要组成部分。文章对史诗中两位民族英雄的不同征战原因、结果进行对比分析,试图找出两者间不同的征战母题链结构。《亚鲁王》作为贵州少数民族文学的重要作品塑造了了一位人文主义英雄的光辉形象,而贝奥武甫则因为带有掠夺性质的战争削弱了自身的光环。 “King Yalu” and “Beowulf” are important heroes of different nationalities. The expedition motif is an important part of any heroic epic. The article makes a contrastive analysis of the causes and results of the two national heroes in the epic, and tries to find out the different structure of the theme of war between them. As an important piece of Guizhou ethnic literature, King Yalu shaped the glorious image of a humanist hero, while Beowulf abated his own aura for the predatory war.