During the Reform Movement of 1898, Liang Qichao strongly advocated Kang Youwei's "Ram III Theory" and stressed that it must be changed. He said: "husband change is also an ancient and modern axiom." "Change also changes, unchanged and changed." (Reform and General Significance) and said: "Historians also describe the phenomenon of evolution." (The Definition of New Historiography) and Yan Fu's "Social Evolution Theory" hold that it is an objective necessity to combine human beings with group evolution. He said that this is "the axiom of the world" and "the commonality of all things" (Shuo Qun). "Therefore, if you want to find traces of evolution, you must rely on the crowd." But he denied qualitative change and emphasized gradual change. He believes that "China's progress should be guided by gradual progress" (Reform and Justice), and gradual progress is an "axiom" in the universe and a universal law of social and historical development and change. Therefore, during the Reform Movement of 1898, he was an active propagandist of Kang Youwei's "III" progressive theory, pointing out that social history was divided into Tusi world, feudal world and Qing dynasty world. The world of monarch, the world of monarch and people, the world with president and the world without president have evolved in six different ways. And "not in the world, can't lose (liè); Even in the world, it cannot be stopped. " After the failure of the Reform Movement of 1898, Liang Qichao had a radical tendency and talked about deconstruction and revolutionary change. He said: "Destructionism, also known as sudden flight, is a means of destroying old things that have been counted down for thousands of years." ("Deconstruction") also said: "Destruction is also destruction, and it is also destruction if it is not destroyed." (New Democracy and Progress) It is believed that a country must go through a stage of extinction if it wants to be rich and strong. But this idea of seeking China's progress through revolutionary destruction is very limited for Liang Qichao. Because on the one hand, he has been afraid of violent revolution, on the other hand, he has illusions about the rulers of the Qing Dynasty. Therefore, with the rise of the democratic revolution, his thought soon returned to the theory of peaceful gradual change. Moreover, he thinks that heroes are the decisive force in the process of social history, and asserts that the world is a hero's world. "There is no world without heroes" (Free Book), "For historians, there is no history without heroes." Liang Qichao, as a reformist, could not have the philosophy of revolutionary theory and historical materialism. However, his evolutionism view, which destroyed the old world and made society grow gradually, has its own progress and innovation, and is also worth learning from later generations.