During the period from 193 1 to 1945, the Japanese invaders successively occupied the most important economic, political and cultural strategic places in China, such as Northeast China, North China, Central China and South China. Throughout the war, the Japanese army massacred, burned, looted and raped everywhere, which ravaged the lives and property of the people of China. A large number of biological and chemical weapons are used to carry out cruel germ warfare and chemical warfare; Take a large number of China civilians and prisoners to do bacteria and poison gas experiments; Poisoning innocent civilians in China, or poisoning rivers, lakes, seas and wells; They plundered a large number of Chinese laborers, forced them to build roads, mine, reclaim land, and engage in large-scale military projects, so that a large number of them died of freezing, hunger, illness and labor; Forced recruitment of China women as "comfort women" seriously harms women's physical and mental health; Implementing the policy of "burning, killing and looting" in the anti-Japanese base areas in an attempt to undermine the minimum living conditions of the soldiers and civilians in the anti-Japanese war; In many places, it has also created a series of shocking tragedies. Today, it is difficult to completely eliminate the evil consequences of Japanese aggression, and the poison gas bombs left by the Japanese army still threaten the life safety of China people from time to time.