The downfall of the six countries was not bad for soldiers, but bad for war and Qin. If you are guilty of Qin, you will lose your vitality, and you will be defeated. Or: the six countries mourn each other and lead the way to Qin? People who don't take bribes will lose their lives, and they will lose their strong support, so they can't do it alone. Therefore, the disadvantage lies in the bribery of Qin. Su Xun believed that the downfall of the six countries was not the weakness of the six countries, nor the prosperity of the Qin State. In the end, all six countries were wiped out by the Qin State one by one. There are many reasons for the demise of the six countries. The fundamental reason is that Qin established advanced relations of production through the thorough reform of Shang Yang's political reform, and its economy developed rapidly, and its military strength surpassed that of the six countries. At the same time, Qin's destruction of the six countries was in line with the general trend of historical development towards unity at that time and had its historical inevitability. This paper belongs to the theory of history, but it is not an analysis of history, nor does it talk about history on the basis of history. Instead, we should base ourselves on history, learn from the past, choose an angle, grasp a problem, hold on to it, establish our own arguments, demonstrate in depth, and clarify our views on real politics. Therefore, when analyzing this article, we should not look at whether it accurately and comprehensively evaluates historical facts, but should focus on its strong realistic pertinence. From the perspective of combining history with reality, and based on historical facts, this paper argues that the death of the Six Kingdoms is not conducive to Qin, criticizes the current disadvantages, and gets to the point, which shows the author's distinct and profound political views.