在世界古代史上农业民族往往被社会发展水平相对滞后的游牧民族征服,一个重要原因是农业民族在军事上抵抗不了游牧民族的进攻。本文分析了原始社会的社会组织、经济、思想和习俗等方面残余形式在游牧民族中的存在,原始残余在游牧民族社会各方面仍发挥着作用,也影响着他们的对外征服战争,特别是大大增强了他们的军事力量。 In the ancient history of the world, the agricultural nation was often conquered by the nomadic ethnic groups whose social development lagged behind. One of the important reasons for this is that the agricultural nation can not militarily resist the nomadic offensive. This paper analyzes the residual forms of primitive society in the social organization, economy, thought and custom and so on. The primitive remnants still play a role in the nomadic society and affect their war of conquest abroad, especially the big Increased their military power.