In the war in Qiannan,the reason for the victory of the Chinese military and civilians: Chinese troops made a very strong resistance in the war; Guizhou unique topography and climate,the army and the people have the same enemy and hatred and fightings made the Japanese invaders can’t do anything; Because of the evolution of the pattern of resistance against Japan and resolute resistance of the army and the people of Qiannan,Retreat has become the only way out of the japanese. The battle of Qiannan is not only a brilliant victory of Chinese soldiers and civilians in the positive battlefield,but also an important military turning point in the late period of the war of resistance against japan,Reflects the strong national cohesion of the Chinese nation be confronted with a formidable enemy