The Nanjing Massacre refers to the large-scale massacre carried out by Japanese troops in Nanjing and its vicinity for several months during the period of China War of Resistance against Japanese Aggression 1937 to 1945 after the defeat of the Republic of China in the defending war in Nanjing and the fall of Nanjing. Among them, Japanese war crimes include robbery, rape and massacre of a large number of civilians and prisoners of war. The scale of the massacre and the number of casualties are not generally recognized, but it is generally believed that the death toll exceeds 300,000.

In China, the Nanjing Massacre is often an important focus of nationalism. In Japan, the public's understanding of the Nanjing Massacre has a wide range of different emotions and opinions. In particular, some extreme right-wingers in Japan think that the Nanjing Massacre is an exaggerated or even fabricated anti-Japanese diplomatic tool, while others think that denying the Nanjing Massacre is a manifestation of historical revisionism and denial. Because the Japanese people have widely different opinions on the Nanjing Massacre, according to the speaker's point of view, the Nanjing Massacre may be called "Nanjing Massacre", "Nanjing Massacre" and "Nanjing Incident". Understanding the Nanjing Massacre is one of the issues in Sino-Japanese diplomatic and non-governmental relations.

In western countries such as Europe and America, Nanjing Massacre is generally translated into English as Nanjing Massacre or Nanjing Massacre, but people's understanding of it is often far less than that of Nazi Massacre.

China and Japanese who witnessed and witnessed the "Nanjing Massacre" are still alive, and those who can witness it will soon die. However, this unprecedented tragedy in China's history has not been solved. We, especially as witnesses of this period of history, have the responsibility to thoroughly clarify the "Nanjing Massacre", the most prominent and terrible Japanese crime in the Second Sino-Japanese War, and to avenge our ancestors, our descendants and even more 340,000 compatriots who died in the "Nanjing Massacre".

Date and place: Pastor Mitch (former member of the International Committee of Nanjing Safe Zone) and Professor Bedes (resident pastor of Yale University after returning to the United States) witnessed the Nanjing Massacre during the Nanjing trial (from 1946 1.948). Vides said: "After the fall of Nanking, the terror reached its peak in two and a half to three weeks, and the terror was serious from the sixth to the seventh." In addition, Shi Maishi, treasurer and secretary of the International Committee of Nanjing Safe Zone and professor of sociology at Jinling University, also told the Nanjing Trial Court: "In the first six weeks, I protested twice a day." Therefore, the Far East International Military Tribunal ruled that "in the first six weeks after the Japanese occupation, more than 200,000 civilians and prisoners were massacred in Nanjing and its vicinity". Accordingly, scholars and ordinary people often only use the "Nanjing Massacre" for six weeks. The "Nanjing Massacre" lasted for more than six weeks, although these six weeks were the worst.