20世纪30年代是国际关系史上的多事之秋,南半球的拉美国家在这动荡的岁月中同样深陷国际政治的漩涡当中。1932年玻利维亚和巴拉圭之间爆发的查科战争牵涉到许多相关国家的利益。从现实主义角度来看,历史根源、地缘政治、美国因素是影响查科战争从始到终的主要原因。因此,本文论述的是在大萧条的国际环境之下,玻利维亚和巴拉圭内部以及外部美国对于查科战争的原因论分析。 The 1930s is a multi-pronged event in the history of international relations. Latin American countries in the southern hemisphere are also deeply in the whirlpool of international politics in this turbulent years. The Chaco war that broke out between Bolivia and Paraguay in 1932 involved the interests of many interested countries. From a realistic point of view, the historical root causes, geopolitical and American factors are the main reasons that affect the Charcoal war from beginning to end. Therefore, this essay deals with the echelon analysis of the Chaco war in Bolivia and Paraguay, both inside and outside Bolivia, in the context of the Great Depression.